DM-41365: Use new Butler get_dataset_type and find_dataset APIs

[timj]

Depends on lsst/daf_butler#899

Checklist

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

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (e1ab719) 82.45% compared to head (8d99273) 82.47%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #382      +/-   ##
==========================================
+ Coverage   82.45%   82.47%   +0.01%     
==========================================
  Files          92       92              
  Lines       10354    10354              
  Branches     1952     1952              
==========================================
+ Hits         8537     8539       +2     
+ Misses       1474     1473       -1     
+ Partials      343      342       -1     

Files	Coverage Δ
python/lsst/pipe/base/testUtils.py	96.92% <100.00%> (ø)
python/lsst/pipe/base/prerequisite_helpers.py	48.45% <0.00%> (ø)
python/lsst/pipe/base/quantum_graph_builder.py	64.32% <50.00%> (ø)

... and 1 file with indirect coverage changes

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