[REVIEW] Fix dynamic_partition_pruning to handle a single Parquet file

[sarahyurick]

Closes #1268

[sarahyurick]

Hi @charlesbluca it looks like the gpuCI failure is unrelated?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (db7931d) 85.54% compared to head (c230395) 85.07%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1280      +/-   ##
==========================================
- Coverage   85.54%   85.07%   -0.47%     
==========================================
  Files          77       77              
  Lines        4261     4261              
  Branches      795      795              
==========================================
- Hits         3645     3625      -20     
- Misses        447      462      +15     
- Partials      169      174       +5     

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[sarahyurick]

Hi @charlesbluca LMK what you think of this.

[charlesbluca]

Thanks @sarahyurick! Can verify locally that this resolved #1268; is there a trivial way we can add a test around this behavior?

[charlesbluca]

rerun tests

[charlesbluca]

Thanks @sarahyurick!