[ci-scan] Skip SocketBlockingModeTransitionTests.ConnectAsync_WithBuffer_Succeeds on Android (refs #128141)

[github-actions]

Reasoning

The test SocketBlockingModeTransitionTests.ConnectAsync_WithBuffer_Succeeds consistently fails on Android with Assert.False() Failure (Expected: False, Actual: True) on line 229 of Connect.Unix.cs. The socket ends up in non-blocking mode after ConnectAsync with a buffer on Android, contrary to the test's expectation that TFO/connectx would leave it blocking. The [ActiveIssue] annotation scoped to TestPlatforms.Android is the correct fix pending investigation.

Linked KBE: #128141

Match verification (from Step 4.8):

1. Same test/family: yes — SocketBlockingModeTransitionTests.ConnectAsync_WithBuffer_Succeeds matches exactly
2. Same failure signature: yes — Assert.False() Failure in both KBE and current log
3. Same OS: yes — Android in both
4. Same architecture: yes — arm64/x64 both affected (KBE tracks android-arm64, current also fails on android-x64)

Impact on platforms

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

Errors log

[FAIL] System.Net.Sockets.Tests.SocketBlockingModeTransitionTests.ConnectAsync_WithBuffer_Succeeds
Assert.False() Failure
Expected: False
Actual:   True
   at System.Net.Sockets.Tests.SocketBlockingModeTransitionTests.<ConnectAsync_WithBuffer_Succeeds>d__10.MoveNext() in /_/src/libraries/System.Net.Sockets/tests/FunctionalTests/Connect.Unix.cs:line 229

First build it occurred

• Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1418286
• Finished: 2026-05-12
• Occurrences in window: 10+ (persistent across entire scanned window)
• Computed within the scanned window; may not be the true origin.

Linked issue

#128141

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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