DM-40243: Attempt to avoid unbounded refcat lookups in QG generation.

[TallJimbo]

Checklist

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

[codecov]

Codecov Report

Patch coverage: 9.09% and project coverage change: -0.25% ⚠️

Comparison is base (548ec45) 82.92% compared to head (7e71b86) 82.67%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #361      +/-   ##
==========================================
- Coverage   82.92%   82.67%   -0.25%     
==========================================
  Files          66       66              
  Lines        7299     7321      +22     
  Branches     1424     1432       +8     
==========================================
  Hits         6053     6053              
- Misses        998     1019      +21     
- Partials      248      249       +1     

Files Changed	Coverage Δ
python/lsst/pipe/base/graphBuilder.py	61.57% <9.09%> (-2.11%)	⬇️

... and 1 file with indirect coverage changes

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