[test-quarantine] Re-quarantine ServerVirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure

[github-actions]

Re-quarantines ServerVirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure, which was unquarantined in PR #66290 on 2026-04-17 but immediately started failing again (~1.5 hours after the unquarantine merged).

Failure evidence:

• Build 1383645 — started 2026-04-17T09:49 UTC (after unquarantine at 08:20 UTC)
• Pipeline: components-e2e (definition 87)

Tracking issue: #66119

The test needs more investigation before it can be reliably unquarantined.

Note

🔒 Integrity filter blocked 6 items

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

• #65815 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65817 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65827 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65816 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• fix flaky Microsoft.AspNetCore.SignalR.Client.Tests.TestServerTests.WebSocketsWorks #65928 pull_request_read: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• fix(http2/3): add trailer headers timeout #66249 pull_request_read: 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 Daily Test Quarantine Management · ● 8.5M · ◷

[wtgodbe]

@copilot please fix this build error:

/mnt/vss/_work/1/s/src/Components/test/E2ETest/ServerExecutionTests/TestSubclasses.cs(116,26): error CS0506: 'ServerVirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure()': cannot override inherited member 'VirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure()' because it is not marked virtual, abstract, or override [/mnt/vss/_work/1/s/src/Components/test/E2ETest/Microsoft.AspNetCore.Components.E2ETests.csproj]

[Copilot]

@copilot please fix this build error:

/mnt/vss/_work/1/s/src/Components/test/E2ETest/ServerExecutionTests/TestSubclasses.cs(116,26): error CS0506: 'ServerVirtualizationTest.NonZeroStartIndex_Scro...

Fixed in 87b2f3e: I made VirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure() virtual and kept the server test as an override, which resolves the CS0506 build error while preserving the quarantine behavior.

[Youssef1313]

Related to #66290

cc @ilonatommy