Test Failure: `Language Client Integration Suite @slow` - `before all` failed on `windows 5.9`

[award999]

Failure logs

  3) Language Client Integration Suite @slow
Extension host test runner error 6 tests failed.
       "before all" hook in "Language Client Integration Suite @slow":

      AssertionError: expected 1 to equal +0
      + expected - actual

      -1
      +0
      
      at buildProject (d:\a\vscode-swift\vscode-swift\test\integration-tests\language\LanguageClientIntegration.test.ts:31:38)
      at Context.setup (d:\a\vscode-swift\vscode-swift\test\integration-tests\language\LanguageClientIntegration.test.ts:45:13)
      at Context.<anonymous> (d:\a\vscode-swift\vscode-swift\test\integration-tests\utilities\testutilities.ts:103:32)

Link to failed run: GitHub Actions Link

Additional context
Also timing out on nightly 6.1 https://github.com/swiftlang/vscode-swift/actions/runs/14392952670/job/40395396950
and insiders https://github.com/swiftlang/vscode-swift/actions/runs/14392952670/job/40395388995

Related test failures
N/A

[plemarquand]

Passing for the last 3 nightlies, will reopen if it crops back up.