test: spin longer on flaky platforms for test-worker-prof

[joyeecheung]

Try spinning longer to get more ticks on flaky platforms and reduce flakiness.

Refs: https://github.com/nodejs/reliability/blob/main/reports/2025-10-29.md

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.56%. Comparing base (bfcf2f7) to head (a232240).
⚠️ Report is 41 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #60492      +/-   ##
==========================================
- Coverage   88.58%   88.56%   -0.02%     
==========================================
  Files         704      704              
  Lines      207774   207828      +54     
  Branches    40026    40035       +9     
==========================================
+ Hits       184050   184070      +20     
- Misses      15759    15805      +46     
+ Partials     7965     7953      -12     

see 46 files with indirect coverage changes

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[aduh95]

Should we run a stress test CI?