tools: enforce trailing commas in test/es-module

[aduh95]

There are only a handful missing, seems like a good time to enable it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.56%. Comparing base (768f3ba) to head (6c22420).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #60891   +/-   ##
=======================================
  Coverage   88.56%   88.56%           
=======================================
  Files         703      703           
  Lines      208291   208291           
  Branches    40169    40170    +1     
=======================================
  Hits       184472   184472           
- Misses      15831    15837    +6     
+ Partials     7988     7982    -6     

see 31 files with indirect coverage changes

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