test-worker-uncaught-exception-async - flaky on Windows?

[mhdawson]

• Version: master
• Platform: Windows
• Subsystem: worker

Failure in unrelated PR
https://ci.nodejs.org/job/node-test-binary-windows/23291/COMPILED_BY=vs2017,RUNNER=win2008r2-vs2017,RUN_SUBSET=1/console

18:04:17 not ok 542 parallel/test-worker-uncaught-exception-async
18:04:17   ---
18:04:17   duration_ms: 120.75
18:04:17   severity: fail
18:04:17   exitcode: 1
18:04:17   stack: |-
18:04:17     timeout
18:04:17     foo
18:04:17   ...

[gireeshpunathil]

unable to repro in 3K runs (win 10, I don't have a win 2008). Better wait to see if it occurs again.