test: increase spin for eventloop test on s390

[mhdawson]

It was excluded as it was failing intermittently. Likely that s390 was just so fast times were rounded down to 0.

Refs: #41286

Increase the spin time on s390x only.

Stress run of 1000 with no failures with this change - https://ci.nodejs.org/job/node-stress-single-test/nodes=rhel8-s390x/548/console

[lpinca]

Does the test still fail without increasing the spin time? I wonder if anything has changed since the test was marked flaky.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.53%. Comparing base (f184a0a) to head (f9562c9).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #56228      +/-   ##
==========================================
- Coverage   88.53%   88.53%   -0.01%     
==========================================
  Files         657      657              
  Lines      189858   189885      +27     
  Branches    36450    36452       +2     
==========================================
+ Hits       168089   168109      +20     
- Misses      14973    14989      +16     
+ Partials     6796     6787       -9     

see 44 files with indirect coverage changes

[mhdawson]

@lpinca I had looked at the test code and nothing changed since the issue was opened. Here is a run on main - https://ci.nodejs.org/view/Stress/job/node-stress-single-test/550/

[lpinca]

I was referring to the actual code being tested, but I see one failure in the stress test on main.