[ci-scan] Skip ExpressionDebuggerTypeProxyTests.ThrowOnNullToCtor on Android (refs #122617)

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Reasoning

On Android NativeAOT, DebuggerTypeProxyAttribute is stripped by the trimmer, causing GetDebugViewType to return null. The test attempts to throw SkipTestException but a subsequent NullReferenceException causes an AggregateException that is reported as a test failure rather than a skip. The [ActiveIssue] annotation scoped to TestPlatforms.Android disables this test on Android where NativeAOT trims the attribute.

Linked KBE: #122617

Match verification (from Step 4.8):

1. Same test/family: yes — ExpressionDebuggerTypeProxyTests.ThrowOnNullToCtor matches exactly
2. Same failure signature: yes — AggregateException (SkipTestException + NullReferenceException) in both KBE title and current log
3. Same OS: yes — Android (android_x64) in both
4. Same architecture: yes — x64 in both (KBE tracks android_x64)

Impact on platforms

• runtime-extra-platforms / android-x64 Release NativeAOT @ Windows.11.Amd64.Android.Open — exit code 1
• runtime-extra-platforms / android-arm64 Release NativeAOT @ Windows.11.Amd64.Android.Open — exit code 1

Errors log

[FAIL] System.Linq.Expressions.Tests.ExpressionDebuggerTypeProxyTests.ThrowOnNullToCtor(sourceObject: { ... })
System.AggregateException : One or more errors occurred. (Didn't find DebuggerTypeProxyAttribute on System.Linq.Expressions.ScopeWithType.) (Object reference not set to an instance of an object.)
---- Microsoft.DotNet.XUnitExtensions.SkipTestException : Didn't find DebuggerTypeProxyAttribute on System.Linq.Expressions.ScopeWithType.
---- System.NullReferenceException : Object reference not set to an instance of an object.

First build it occurred

• Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1232261
• Finished: 2025-12-15
• Occurrences in window: persistent (tracked since Dec 2025)
• Computed within the scanned window; may not be the true origin.

Linked issue

#122617

Note

🔒 Integrity filter blocked 3 items

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

• #125825 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• [ci-scan] Known Build Error: SocketBlockingModeTransitionTests.ConnectAsync_WithBuffer_Succeeds on Android #128141 issue_read: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #117138 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 · ● 47.1M · ◷

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