[release/11.0.1xx-preview1] Source code updates from dotnet/msbuild

[dotnet-maestro]

Note

This is a codeflow update. It may contain both source code changes from
the source repo
as well as dependency updates. Learn more here.

This pull request brings the following source code changes

From https://github.com/dotnet/msbuild

• Subscription: 3bc6047d-8fec-49d1-ac72-4aea056f5b78
• Build: 20260129.1 (299270)
• Date Produced: January 29, 2026 7:38:42 AM UTC
• Commit: 6e61e96acff3f3bd97740401540053cc2d49b189
• Commit Diff: 6b7a28c...6e61e96
• Branch: vs18.4

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/msbuild:6e61e96acff3f3bd97740401540053cc2d49b189..https://github.com/dotnet/dotnet:darc-release/11.0.1xx-preview1-f73c588c-2efb-487a-94f1-2c46f99b6ebc

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Localized file check-in by OneLocBuild Task: Build definition ID 9434: Build ID 13186544 msbuild#13128
• Set DotNetFinalVersionKind to release msbuild#13133

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[rainersigwald]

Not require for p1; take or close at leisure.