DM-47730: add "success caveats" system to report on NoWorkFound and similar cases

[TallJimbo]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Attention: Patch coverage is 91.37931% with 5 lines in your changes missing coverage. Please review.

Project coverage is 90.16%. Comparing base (f3af793) to head (d771db7).
Report is 5 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
python/lsst/ctrl/mpexec/cli/script/report.py	58.33%	3 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #320      +/-   ##
==========================================
+ Coverage   89.98%   90.16%   +0.18%     
==========================================
  Files          50       50              
  Lines        4572     4626      +54     
  Branches      421      426       +5     
==========================================
+ Hits         4114     4171      +57     
+ Misses        330      325       -5     
- Partials      128      130       +2     

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[MichelleGower]

Looks good. Merge approved.