BUG: Fixes pd.merge issue with columns of dtype numpy.uintc on windows (#60145)

* bug fix for numpy.uintc in merge operations on windows

Added pytest test case to verify correct behavior with numpy.uintc dtype

* Formatting changes after running pre-commit

* Added tests for numpy.intc

* added whatsnew note

* pre-commit automatic changes and also made changes to test_merge.py file to make pandas namespace consistent

* removed comment

* added the deleted whatsnew note back

* better whatsnew note

Co-authored-by: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>

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Co-authored-by: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>