DM-45722: CRITICAL logs on empty quantum graph

[kfindeisen]

This PR adjusts the unit tests for some behavior changes added in lsst/pipe_base#440.

Checklist

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

[timj]

You will need to rerun the action that failed once pipe_base is merged.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.00%. Comparing base (b13e38d) to head (a98f9a2).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #305   +/-   ##
=======================================
  Coverage   89.00%   89.00%           
=======================================
  Files          50       50           
  Lines        4439     4439           
  Branches      733      733           
=======================================
  Hits         3951     3951           
  Misses        347      347           
  Partials      141      141           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.