Remove 10.14 suffix from osx nuget package

[jeffpardy]

Updates the specified runtime for osx to remove the OS specific RID. This is no longer supported since .NET 8 and generates the following warning as well as runtime errors.

Matches the same changes made in microsoft/onnxruntime with microsoft/onnxruntime#17277

Build Warning

/usr/local/share/dotnet/sdk/9.0.101/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(322,5): warning NETSDK1206: Found version-specific or distribution-specific runtime identifier(s): osx.10.14-arm64, osx.10.14-x64. Affected libraries: Microsoft.ML.OnnxRuntime.Extensions. In .NET 8.0 and higher, assets for version-specific and distribution-specific runtime identifiers will not be found by default. See https://aka.ms/dotnet/rid-usage for details.

Runtime Error

Error Message
      : Microsoft.ML.OnnxRuntime.OnnxRuntimeException : [ErrorCode:NoSuchFile] The ONNX Runtime extensions library
       was not found. The Microsoft.ML.OnnxRuntime.Extensions NuGet package must be referenced by the project to u
      se 'OrtExtensions.RegisterCustomOps.
      Stack Trace:
         at Microsoft.ML.OnnxRuntime.SessionOptions.RegisterOrtExtensions()

[jeffpardy]

Thanks @wenbingl!
@skottmckay @edgchen1 anything else I can do?

[edgchen1]

@jeffpardy The changes look fine to me. I'm not very familiar with the NuGet setup though. Were you able to verify that this fixes the issues you encountered?

[ezhevita]

I can verify that it fixes runtime error and no longer requires custom ResolvingUnmanagedDll.

[skottmckay]

Should all these directories move to be 'net8.0-...' given net8 is the lowest version currently supported?

The xamarin targets (monoandroid11.0 and xamarinios10) can be deleted as well.

[jeffpardy]

Sorry @skottmckay I was away for a bit. Not opposed to that cleanup but would it be ok to do as a separate pull request? Just thinking it might increase the blast radius of this particular change?

[rodrigovidal]

Hi @jeffpardy and team 👋,
I'm having issues with the current version on OSX and found this PR.
Would be great to merge this and release it in the next patch. Happy to help with any follow-up if needed!