Update GivenThatWeWantMSBuildToRespectCustomCulture.cs

[ViktorHofer]

Fixes failing SupportRespectAlreadyAssignedItemCulture_IsNotSupported_BuildShouldFail test by consolidating back with the core only test theory.

This is causing all PRs in sdk main to fail because of a machine rollout that updated VS to 17.13.x yesterday.

Pull Request Overview

This PR fixes the failing test by consolidating the behavior into a single test method that verifies a warning instead of a build failure when custom culture issues occur.

• Added a [Theory] attribute to the warning test.
• Removed the failing test and its associated commentary, streamlining the test behavior.

Comments suppressed due to low confidence (1)

test/Microsoft.NET.Build.Tests/GivenThatWeWantMSBuildToRespectCustomCulture.cs:46

• Removing the failing test reduces coverage for scenarios where the build should fail due to custom culture issues. Consider adding alternative tests to ensure that incorrect custom culture settings are properly handled.

public void SupportRespectAlreadyAssignedItemCulture_IsNotSupported_BuildShouldFail(string targetFramework)

[ViktorHofer]

Force merge to unblock CI in sdk. The failure is unrelated and the VMR legs don't exercise this code path.

[edvilme]

/backport to release/9.0.1xx

[github-actions]

Started backporting to release/9.0.1xx: https://github.com/dotnet/sdk/actions/runs/13839056126

[github-actions]

@edvilme backporting to "release/9.0.1xx" failed, the patch most likely resulted in conflicts:

$ git am --3way --empty=keep --ignore-whitespace --keep-non-patch changes.patch

Applying: Update GivenThatWeWantMSBuildToRespectCustomCulture.cs
Using index info to reconstruct a base tree...
M	test/Microsoft.NET.Build.Tests/GivenThatWeWantMSBuildToRespectCustomCulture.cs
Falling back to patching base and 3-way merge...
Auto-merging test/Microsoft.NET.Build.Tests/GivenThatWeWantMSBuildToRespectCustomCulture.cs
CONFLICT (content): Merge conflict in test/Microsoft.NET.Build.Tests/GivenThatWeWantMSBuildToRespectCustomCulture.cs
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config set advice.mergeConflict false"
Patch failed at 0001 Update GivenThatWeWantMSBuildToRespectCustomCulture.cs
Error: The process '/usr/bin/git' failed with exit code 128

Please backport manually!

[edvilme]

/backport to release/9.0.2xx

[github-actions]

Started backporting to release/9.0.2xx: https://github.com/dotnet/sdk/actions/runs/13839085981

[edvilme]

/backport to release/9.0.3xx

[github-actions]

Started backporting to release/9.0.3xx: https://github.com/dotnet/sdk/actions/runs/13839552149

[edvilme]

/backport to release/10.0.1xx-preview2

[github-actions]

Started backporting to release/10.0.1xx-preview2: https://github.com/dotnet/sdk/actions/runs/13839601837

[nagilson]

9.0.100 failed, so I would recommend doing that manually

[Forgind]

9.0.100 failed, so I would recommend doing that manually

edvilme clarified that 9.0.100 doesn't have this issue; it was just a typo

[edvilme]

9.0.100 failed, so I would recommend doing that manually

edvilme clarified that 9.0.100 doesn't have this issue; it was just a typo

Update: Just discovered that 9.0.1xx does have the issue, although just one of the tests in this pr exists, I will create a new pr deleting the failing test SupportRespectAlreadyAssignedItemCulture_IsNotSupported_BuildShouldFail