DM-45894: Fix dimension universe instantiation in subprocesses

[andy-slac]

With run-qbb when dimension universe is not the default one, we need
to make sure that that universe is instantiated from a configuration
in a subprocess before unpickling anything that requires that universe.
The fix uses butler factory to do that, using its unpickle method,
and there is some complicated logic in executors to make sure that
unpickling of that factory happens first thing in a subprocess.
There may be an easier way to enforce that but it would require
interface changes for MPGraphExecutor or SingleQuantumExecutor.

Subprocess parameters are now pickled manually to guarantee that
logging is initialized properly in a subprocess before any complex
unpickling happens.

Checklist

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

[codecov]

Codecov Report

Attention: Patch coverage is 44.44444% with 10 lines in your changes missing coverage. Please review.

Project coverage is 88.95%. Comparing base (6d12fdf) to head (66e7b6c).
Report is 5 commits behind head on main.

Files	Patch %	Lines
python/lsst/ctrl/mpexec/cmdLineFwk.py	28.57%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #304      +/-   ##
==========================================
- Coverage   89.16%   88.95%   -0.21%     
==========================================
  Files          50       50              
  Lines        4376     4393      +17     
  Branches      726      728       +2     
==========================================
+ Hits         3902     3908       +6     
- Misses        335      345      +10     
- Partials      139      140       +1     

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[timj]

Looks good.