[test-quarantine] Re-quarantine Http2ConnectionTests.RequestHeaderStringReuse_MultipleStreams_KnownHeaderReused

[github-actions]

This test was recently unquarantined (PR #66083, 2026-04-02) but has been failing again since unquarantining, with 4 failures observed in the last 24 hours in the quarantined pipeline (build 1347843) and via WorkItemExecution crashes.

Associated issue: #65915

The test fails with:

Assert.Equal() Failure: Values differ
Expected: 1
Actual:   0

at Http2ConnectionTests.cs:195 — stream pool count is 0 instead of 1 after TriggerTick().

This is a re-quarantine (Case B): the test was prematurely unquarantined before the underlying flakiness was resolved.

Note

🔒 Integrity filter blocked 47 items

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

• #66092 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66084 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66075 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66070 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66061 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66060 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66003 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65930 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65928 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65893 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65891 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65887 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65880 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65871 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65870 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65869 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• ... and 31 more items

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

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

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