fdb list: Ignore year/month if date present

[ChrisspyB]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.33333% with 1 line in your changes missing coverage. Please review.

Project coverage is 61.95%. Comparing base (ae6cb95) to head (759f166).

Files with missing lines	Patch %	Lines
src/gribjump/Engine.cc	90.90%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #41      +/-   ##
===========================================
+ Coverage    61.87%   61.95%   +0.07%     
===========================================
  Files           92       92              
  Lines         4695     4707      +12     
  Branches       501      502       +1     
===========================================
+ Hits          2905     2916      +11     
- Misses        1790     1791       +1     

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