🛠 Repo: `test-node:integration` on windows-latest for `--parallel` tests

[JoshuaKGoldberg]

Tooling Suggestion Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have read and agree to Mocha's Code of Conduct and Contributing Guidelines
• I have searched for related issues and issues with the faq label, but none matched my issue.
• I want to provide a PR to resolve this

Overview

Example from #5408 -> https://github.com/mochajs/mocha/actions/runs/18016406085/job/51262764441?pr=5408:

  1) --parallel
       pool shutdown
         during normal operation
           should not leave orphaned processes around:
     Error: Error: spawn wmic ENOENT
      at ChildProcess.<anonymous> (node_modules\pidtree\lib\bin.js:34:10)
      at ChildProcess.emit (node:events:524:28)
      at ChildProcess._handle.onexit (node:internal/child_process:291:12)
      at onErrorNT (node:internal/child_process:483:16)
      at process.processTicksAndRejections (node:internal/process/task_queues:82:21)

  2) --parallel
       pool shutdown
         during operation with --bail
           should not leave orphaned processes around:
     Error: Error: spawn wmic ENOENT
      at ChildProcess.<anonymous> (node_modules\pidtree\lib\bin.js:34:10)
      at ChildProcess.emit (node:events:524:28)
      at ChildProcess._handle.onexit (node:internal/child_process:291:12)
      at onErrorNT (node:internal/child_process:483:16)
      at process.processTicksAndRejections (node:internal/process/task_queues:82:21)

This happens on:

• 18.20.8
• 20.19.4
• 22.18.0
• 24.6.0

This does not happen on the same Node.js versions in ubuntu-latest machines.

Additional Info

That 18.20.8 run also showed a failure on --watch:

  3) --watch
       when enabled
         with required hooks
           mochaHooks.afterAll runs as expected:
     UnexpectedError: 
expected 1 to equal 2

      at D:\a\mocha\mocha\test\integration\options\watch.spec.js:362:13
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
      set UNEXPECTED_FULL_TRACE=true to see the full stack trace

[mark-wiemer]

wmic has been removed in Windows Server 2025 and we'll need to find a workaround. This is a Windows issue, we could stick to Windows 2022 for now but that's no fun. Ref https://support.microsoft.com/en-us/topic/windows-management-instrumentation-command-line-wmic-removal-from-windows-e9e83c7f-4992-477f-ba1d-96f694b8665d (there is a learn.microsoft.com link that I can't find now, but I encountered this in my work at Microsoft last week too)

expected 1 to equal 2 is a rare issue tracked in #5361

[mark-wiemer]

Caused by simonepri/pidtree#26, this test is super weird, let me see if we can refactor it significantly...