[ci-scan] Build break: macOS arm64 libraries job exceeds 120-minute timeout

## Build Information Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1561148 Build error leg or test failing: osx-arm64 Debug Libraries_CheckedCoreCLR Pull request: https://github.com/dotnet/runtime/pull/132529 <details> <summary>KBE authoring guidance (ci-failure-scan)</summary> - `Error Details` is for readers. The excerpt below is copied from the Azure Pipelines timeline issue. - Build Analysis parses only the single JSON block under `Error Message`. - `ErrorPattern` uses .NET `Singleline | IgnoreCase | NonBacktracking` matching with a 50ms-per-line timeout. - `BuildRetry` is false so this issue does not request a CI rerun. - `ExcludeConsoleLog` is true because this is an Azure Pipelines job-timeout issue rather than a Helix console failure. </details> ## Error Details The job running on agent Azure Pipelines 175 ran longer than the maximum time of 120 minutes. For more information, see https://go.microsoft.com/fwlink/?linkid=2077134 The affected leg was `osx-arm64 Debug Libraries_CheckedCoreCLR`. The job reached its timeout after the build and its Helix submission had completed. Helix job `410bc3ae-6371-488b-835a-9a19edb748ee` finished all 260 work items successfully. ## Error Message ```json { "ErrorMessage": "", "ErrorPattern": "^The job running on agent [^\\r\\n]* ran longer than the maximum time of 120 minutes\\.", "BuildRetry": false, "ExcludeConsoleLog": true } ``` <details> <summary>Agentic workflow metadata (ci-failure-scan)</summary> Workflow artifact: ci-failure-scan Artifact kind: kbe-verification Verified match count: 1 hit in failure.log </details> > [!NOTE] > This issue was filed with the assistance of GitHub Copilot. <!-- Known issue validation start --> ### Known issue validation **Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1561148 **Error message validated:** `[^The job running on agent [^\r\n]* ran longer than the maximum time of 120 minutes\.`] **Result validation:** :white_check_mark: Known issue matched with the provided build. **Validation performed at:** 8/20/2026 10:02:24 PM UTC <!-- Known issue validation end -->