Update doc on profiling config settings

[barosiak]

Summary

Move documentation from https://github.com/dotnet/runtime/blob/main/docs/design/coreclr/profiling/Profiler%20Loading.md to https://github.com/dotnet/docs/blob/main/docs/core/runtime-config/debugging-profiling.md

Add description of changes introduced after merging dotnet/runtime#121646, issue: dotnet/runtime#117902

Fixes #49963

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Internal previews

📄 File	🔗 Preview link
docs/core/runtime-config/debugging-profiling.md	Runtime configuration options for debugging and profiling

[noahfalk]

👍

[noahfalk]

Not sure if the doc team has any preference here, but if we are only including this text in one place it may be simpler to inline it there rather than using the include mechanism. The DOTNET version of this got included from many different pages.

[Copilot]

Pull Request Overview

This PR updates the documentation for profiling configuration settings in .NET. The changes document the new DOTNET_* prefix support for profiler environment variables introduced in .NET 11, alongside the existing CORECLR_* prefixes maintained for backward compatibility.

Key changes include:

• Adding a new include file explaining the dual prefix support for profiler environment variables starting in .NET 11
• Documenting new ARM32 and ARM64 profiler path environment variables
• Reorganizing the profiler location section to clarify the two loading methods (environment variables and Windows registry)
• Expanding documentation on Windows registry-based profiler loading

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
includes/coreclr-prefix.md	New include file explaining DOTNET and CORECLR prefix support starting in .NET 11
docs/core/runtime-config/debugging-profiling.md	Updated environment variable tables to show both CORECLR_* and DOTNET_* prefixes, added ARM32/ARM64 paths, added registry loading documentation, and reorganized profiler location section