feat(py): support count rows with filter in a fragment

[eddyxu]

No description provided.

[eddyxu]

@westonpace need some help to take a look of this overflow issue.

thread 'dataset::scanner::test::test_plans::data_storage_version_1_LanceFileVersion__Legacy::stable_row_id_1_false' has overflowed its stack

[westonpace]

@westonpace need some help to take a look of this overflow issue.

Probably a large futures need boxed thing. I'll take a look.

[westonpace]

@eddyxu fixed stack overflow. Remaining test failures look related to count_rows change?

[eddyxu]

Thanks @westonpace . Fixed the rest of test

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 73.77049% with 16 lines in your changes missing coverage. Please review.

Project coverage is 79.00%. Comparing base (7363a53) to head (5984dcb).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
rust/lance/src/dataset/scanner.rs	77.50%	1 Missing and 8 partials ⚠️
rust/lance/src/dataset/fragment.rs	75.00%	0 Missing and 4 partials ⚠️
rust/lance/src/dataset/take.rs	0.00%	0 Missing and 2 partials ⚠️
java/core/lance-jni/src/fragment.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3318      +/-   ##
==========================================
- Coverage   79.03%   79.00%   -0.04%     
==========================================
  Files         246      246              
  Lines       87628    87675      +47     
  Branches    87628    87675      +47     
==========================================
+ Hits        69256    69266      +10     
- Misses      15505    15530      +25     
- Partials     2867     2879      +12     

Flag	Coverage Δ
unittests	79.00% <73.77%> (-0.04%)	⬇️

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