🐛 Return include fields when one of them is empty

[sunnyosun]

Print warning for no-value columns in df include:

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 92.38%. Comparing base (80fb3b0) to head (9c94aae).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
lamindb/_query_set.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2044      +/-   ##
==========================================
- Coverage   92.39%   92.38%   -0.02%     
==========================================
  Files          54       54              
  Lines        6341     6342       +1     
==========================================
  Hits         5859     5859              
- Misses        482      483       +1     

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[github-actions]

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[andreassteffen]

thank you so much! Will test later.

[sunnyosun]

More fixes and tests here: #2045