[ci-scan] Mute OverlappingExtensions_AllMatchTypes_Comprehensive test

[github-actions]

Linked KBE: #124210

This PR adds [ActiveIssue] to mute OverlappingExtensions_AllMatchTypes_Comprehensive which fails intermittently across multiple platforms and CI pipelines.

Verification

1. Same test (or test family)? Yes — OverlappingExtensions_AllMatchTypes_Comprehensive matches KBE OverlappingExtensions_AllMatchTypes_Comprehensive failed in CI #124210 exactly.
2. Same failure signature? Yes — Assert.DoesNotContain() Failure: Filter matched in collection on file enumeration with overlapping extension patterns.
3. OS in scope? Yes — KBE reports failures on Windows, Linux (musl, arm), matching the cross-platform nature of the issue.
4. Architecture in scope? Yes — x64, arm all reported in KBE comments.

Failing legs

• runtime-extra-platforms (def 154): linux_musl-x64 outerloop
• runtime-coreclr crossgen2 (def 124): windows-x64 TestReadyToRun
• runtime-coreclr libraries-jitstressregs (def 118): linux-arm jitstressregs0x2000

The [ActiveIssue] is not scoped to a specific platform since the failure reproduces across Linux, Windows, x64, and arm.

Note

🔒 Integrity filter blocked 3 items

The following items were blocked because they don't meet the GitHub integrity level.

• #85747 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #114222 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #125825 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".

To allow these resources, lower min-integrity in your GitHub frontmatter:

tools:
  github:
    min-integrity: approved  # merged | approved | unapproved | none

Generated by CI Outer-Loop Failure Scanner · ● 95.7M · ◷

[kotlarmilos]

Tracked and failing since Feb, I suggest disabling it until further investigation.

[Copilot]

Pull request overview

This PR mutes an intermittently failing filesystem enumeration test by annotating it with [ActiveIssue], preventing it from running until the linked tracking issue is resolved.

Changes:

• Added an [ActiveIssue("https://github.com/dotnet/runtime/issues/124210")] attribute to OverlappingExtensions_AllMatchTypes_Comprehensive.

Show a summary per file

File	Description
src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/Enumeration/MatchTypesTests.cs	Marks OverlappingExtensions_AllMatchTypes_Comprehensive with ActiveIssue to skip it due to known intermittent failures.

Copilot's findings

• Files reviewed: 1/1 changed files
• Comments generated: 1

[kotlarmilos]

@copilot Make active issue platform specific

[Copilot]

@copilot Make active issue platform specific

Done in 7294fae — ActiveIssue is now platform-specific: TestPlatforms.Windows | TestPlatforms.Linux.

Tracked and failing since Feb, I suggest disabling it until further investigation.

Implemented in 7294fae. The test remains disabled while investigation continues, and now the ActiveIssue is scoped by platform instead of muting everywhere.