[release/8.0.1xx] Update dependencies from dotnet/arcade

[Copilot]

Problem

Updates Microsoft.DotNet.Arcade.Sdk from 8.0.0-beta.25563.4 to 8.0.0-beta.25574.4. The arcade update introduced stricter analyzer rules that exposed two code style violations in test files:

• IDE0044: Field should be readonly
• IDE0048: Missing parentheses for operator precedence clarity

Solution

• MockInstallerFactory.cs: Made _factoryId field readonly since it's only assigned at initialization
• XunitLoggerProvider.cs: Added parentheses around null-coalescing expression for correct precedence

// Before
messageBuilder.AppendLine(firstLinePrefix + lines.FirstOrDefault() ?? string.Empty);

// After  
messageBuilder.AppendLine(firstLinePrefix + (lines.FirstOrDefault() ?? string.Empty));

Checks:

• Added unit tests

---

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Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 11vvsblobprodcus336.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/AB88DE0132B6D75989D697FA80071392/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 1s1vsblobprodcus386.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/AB88DE0132B6D75989D697FA80071392/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/71CDA9FA07BF67921CD59B3ABBA37B0E/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/2C284E924AAA368B86377B61F57BA4C1/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 2kmvsblobprodcus39.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/AB88DE0132B6D75989D697FA80071392/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 7devsblobprodcus323.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/77C2B7EFA55E8BDA0B153C2537FBB3C8/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• fdpvsblobprodcus345.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/AB88DE0132B6D75989D697FA80071392/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• i1qvsblobprodcus353.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/77C2B7EFA55E8BDA0B153C2537FBB3C8/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• imzvsblobprodcus368.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/77C2B7EFA55E8BDA0B153C2537FBB3C8/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• k4kvsblobprodcus344.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/templating/Microsoft.TemplateEngine.sln --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• l49vsblobprodcus358.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/E14C8BA0FF1586483BD6B71B290C5072/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• m8dvsblobprodcus37.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/97C00D1D1F52251A513DE1D1C4C4B56A/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• n3kvsblobprodcus335.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/templating/Microsoft.TemplateEngine.sln --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/2C284E924AAA368B86377B61F57BA4C1/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• o3svsblobprodcus318.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet build test/Microsoft.TemplateEngine.Mocks/Microsoft.TemplateEngine.Mocks.csproj --no-restore (dns block)
  • Triggering command: /usr/bin/dotnet dotnet build test/Microsoft.TemplateEngine.TestHelper/Microsoft.TemplateEngine.TestHelper.csproj --no-restore (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/templating/Microsoft.TemplateEngine.sln --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• pe3vsblobprodcus354.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/2C284E924AAA368B86377B61F57BA4C1/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• rcxvsblobprodcus328.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet build test/Microsoft.TemplateEngine.TestHelper/Microsoft.TemplateEngine.TestHelper.csproj --no-restore (dns block)
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• s8mvsblobprodcus38.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/97C00D1D1F52251A513DE1D1C4C4B56A/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• st8vsblobprodcus339.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/EE9D343C76C38EDF0AC64A832F8C101A/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• vwvvsblobprodcus334.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/E14C8BA0FF1586483BD6B71B290C5072/missingpackages_workingdir --packages /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/templating/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)

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