chore: Fix incorrect debug assertion in ChunkedArray::from_chunks_and_dtype

[stinodego]

Converting an empty Array-of-Dates type resulted in a panic due to a debug assert:

pl.Series(dtype=pl.Array(pl.Date, 1)).to_list()

pyo3_runtime.PanicException: assertion `left == right` failed
  left: Date32
 right: Int32

Looks like empty arrays end up with the wrong data type here. I followed the trace but couldn't work out exactly why that happens. I did find this TODO comment which seems related:

polars/crates/polars-core/src/chunked_array/array/iterator.rs

Lines 41 to 43 in 9ea3bb6

	// TODO: figure out how to deal with physical/logical distinction
	// physical primitives like time, date etc. work
	// physical nested need more

For now I have disabled the debug assertion for empty arrays. It resolves this issue.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.48%. Comparing base (9912af0) to head (30635d8).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16697      +/-   ##
==========================================
- Coverage   81.49%   81.48%   -0.01%     
==========================================
  Files        1416     1416              
  Lines      186880   186880              
  Branches     3023     3023              
==========================================
- Hits       152289   152279      -10     
- Misses      34059    34070      +11     
+ Partials      532      531       -1     

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[stinodego]

The .to_physical() here is unneeded as we have already checked that dtype is primitive.

[codspeed-hq]

CodSpeed Performance Report

Merging #16697 will not alter performance

_{Comparing hyp-array (30635d8) with main (9912af0)}

Summary

✅ 37 untouched benchmarks