[0.77] Desktop x86ReleaseFabric Universal Tests failing in CI

[TatianaKapos]

Problem Description

This PR: #14147 renabled most of the Desktop Integration Tests. This fixed all the testcase but the Desktop x86ReleaseFabric Universal Tests which are consistently failing on CI pipeline since December. Currently commented out these tests again in the 0.77-preview-branch but will need to reenable these.

Log example: https://dev.azure.com/ms/react-native-windows/_build/results?buildId=618146&view=logs&j=f69354ab-4e0c-522f-eef1-9e775cefab38&t=190039ec-e31d-5c93-7c7f-9be050952e80

  Passed SimpleRedirectPatchSucceeds [4 ms]
  Passed RequestGetExplicitUserAgentSucceeds [6 ms]
[0x80072ee7] The server name or address could not be resolved
  Passed RequestGetFails [2 s]
  Skipped WebView
  Skipped AccessibilityManager
  Skipped SimpleSnapshot
  Skipped Timers
  Skipped Promise
  Skipped ImageSnapshot
  Failed Fetch [33 s]
  Error Message:
   Assert failed. Expected:<1> Actual:<2> - Timeout waiting for markTestSucceeded() to be called.
  Stack Trace:
  	at RNTesterIntegrationTests::Fetch() in D:\a\_work\1\s\vnext\Desktop.IntegrationTests\RNTesterIntegrationTests.cpp:line 222
  Failed XHRSample [32 s]
  Error Message:
   Assert failed. Expected:<1> Actual:<2> - Timeout waiting for markTestSucceeded() to be called.
  Stack Trace:
  	at RNTesterIntegrationTests::XHRSample() in D:\a\_work\1\s\vnext\Desktop.IntegrationTests\RNTesterIntegrationTests.cpp:line 100
  Skipped WebSocketBinary
  Skipped SyncMethod
  Skipped LayoutEvents

  Failed Dummy [32 s]
  Error Message:
   Assert failed. Expected:<1> Actual:<2> - Timeout waiting for markTestSucceeded() to be called.
  Stack Trace:
  	at RNTesterIntegrationTests::Dummy() in D:\a\_work\1\s\vnext\Desktop.IntegrationTests\RNTesterIntegrationTests.cpp:line 193
  Skipped LoggingWithNoCallback
  Failed Logging [32 s]
  Error Message:
   Assert failed. Expected:<6> Actual:<0>
  Stack Trace:
  	at RNTesterIntegrationTests::Logging() in D:\a\_work\1\s\vnext\Desktop.IntegrationTests\RNTesterIntegrationTests.cpp:line 79
  Passed SendReceiveLargeMessage [5 ms]
  Passed PingClose [2 ms]
  Passed SendBinary [45 ms]
  Passed SendConsecutive [2 ms]
  Skipped AbruptDisconnectFailsWithSpecificMessage
  Passed ConnectClose [2 ms]
  Skipped AdditionalHeaders
  Passed SendReceiveClose [2 ms]
  Passed ConnectNoClose [2 ms]
  Skipped ProcessThreadsPerResource
Results File: D:\a\_work\_temp\TestResults\cloudtest_620945e8c000000_2024-12-19_18_33_30.trx
Total tests: 66
     Passed: 43
     Failed: 5
    Skipped: 18
##[error]Test Run Failed.

Steps To Reproduce

1. Look at CI pipeline anytime after Dec. 4th

[chrisglein]

Looks like PR checks for #14147 passed when it was merged, but there have been ongoing issues afterwards. @TatianaKapos and @JunielKatarn can you follow up?

[TatianaKapos]

@chrisglein This test only runs in the BuildEnvironment: Continuous which doesn't get run in PR for the main branch but does in the stable branches (stable branches have a more robust set of tests for PRs)

Messaged @JunielKatarn about this and he said he would look at it when he's back from oofage, reassigning this bug! This will also affect any branches cut until it's fixed (ie 0.78)