[Test] SOSAsyncTests.AsyncMain Fails on .OS Thread Id

Configuration: Alpine3_23_x64_Debug 8.0.25

Exception Message
```
System.Exception : VerifyOutput: no last command output or debugger exited unexpectedly: .OS Thread Id:\s+0x[A-Fa-f0-9]+(`[A-Fa-f0-9]+)?\s+.
```
Stacktrace
```
at SOSRunner.VerifyOutput(String verifyLine, Boolean match) in /__w/1/s/src/tests/SOS.UnitTests/SOSRunner.cs:line 1341
at SOSRunner.RunScript(String scriptRelativePath) in /__w/1/s/src/tests/SOS.UnitTests/SOSRunner.cs:line 973
at SOSRunner.RunScript(String scriptRelativePath) in /__w/1/s/src/tests/SOS.UnitTests/SOSRunner.cs:line 1011
at SOSTestHelpers.RunTest(String scriptName, TestInformation information, ITestOutputHelper output) in /__w/1/s/src/tests/SOS.UnitTests/SOS.cs:line 157
at SOSTestHelpers.RunTest(TestConfiguration config, String debuggeeName, String scriptName, ITestOutputHelper output, String testName, Boolean testLive, Boolean testDump, Boolean testTriage, Boolean testMini, DumpGenerator dumpGenerator) in /__w/1/s/src/tests/SOS.UnitTests/SOS.cs:line 192
at SOSAsyncTests.AsyncMain(TestConfiguration config) in /__w/1/s/src/tests/SOS.UnitTests/SOS.cs:line 771
```

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1501733&view=ms.vss-test-web.build-test-results-tab&runId=41400228&paneView=debug&resultId=100343

Start with SOSAsyncTests.AsyncMain in src/tests/SOS.UnitTests/SOS.cs and the verification path in SOSRunner.cs, then reproduce Alpine3_23_x64_Debug 8.0.25 using the linked build. Done means the AsyncMain test completes and its .OS Thread Id output matches the expected pattern without VerifyOutput failure.

Written by the indexing model from the issue text.