Removed **kwargs from sample_numpyro_nuts and sample_blackjax_nuts

[fonnesbeck]

What is this PR about?

The **kwargs for sample_numpyro_nuts and sample_blackjax_nuts are not used by the functions and can cause hard-to-detect bugs when keyword arguments are passed but not used. With this change, unused arguments will generate an exception.

Checklist

• Explain important implementation details 👆
• Make sure that the pre-commit linting/style checks pass.
• Link relevant issues (preferably in nice commit messages)
• Are the changes covered by tests and docstrings?
• Fill out the short summary sections 👇

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📚 Documentation preview 📚: https://pymc--6768.org.readthedocs.build/en/6768/

[canyon289]

This ones bit me before

[codecov]

Codecov Report

Merging #6768 (846578c) into main (864ecb3) will increase coverage by 0.01%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6768      +/-   ##
==========================================
+ Coverage   91.91%   91.93%   +0.01%     
==========================================
  Files          95       95              
  Lines       16134    16134              
==========================================
+ Hits        14830    14833       +3     
+ Misses       1304     1301       -3     

Impacted Files	Coverage Δ
pymc/sampling/jax.py	98.26% <ø> (ø)

... and 1 file with indirect coverage changes

[fonnesbeck]

Yes, just spent almost a week chasing down an issue that was caused by my passing postprocesing_chunks (note missing "s") to sample_numpyro_nuts, which it silently accepts but does nothing with.

You would think that all the fine pre-commit hooks we have would object to allowing unused kwargs in a function's signature, but apparently that's totally cool.