feat(python): Update __array__ method for Series and DataFrame to support copy parameter

[stinodego]

Updating for NumPy 2.0.0. See:
https://numpy.org/devdocs/user/basics.interoperability.html#the-array-method

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 81.44%. Comparing base (3d9ef69) to head (ebcae52).
Report is 1 commits behind head on main.

Files	Patch %	Lines
py-polars/polars/dataframe/frame.py	37.50%	8 Missing and 2 partials ⚠️
py-polars/polars/series/series.py	62.50%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16401      +/-   ##
==========================================
- Coverage   81.45%   81.44%   -0.02%     
==========================================
  Files        1409     1409              
  Lines      184567   184591      +24     
  Branches     2962     2970       +8     
==========================================
- Hits       150333   150332       -1     
- Misses      33718    33740      +22     
- Partials      516      519       +3     

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