fix: clearer error in dataset take

[wkalt]

This changes an error message to provide detail in the same way as elsewhere in the file.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.25%. Comparing base (7c19c22) to head (df29571).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
rust/lance/src/dataset/take.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5243      +/-   ##
==========================================
+ Coverage   82.23%   82.25%   +0.01%     
==========================================
  Files         344      344              
  Lines      144765   144766       +1     
  Branches   144765   144766       +1     
==========================================
+ Hits       119050   119079      +29     
+ Misses      21797    21766      -31     
- Partials     3918     3921       +3     

Flag	Coverage Δ
unittests	82.25% <0.00%> (+0.01%)	⬆️

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