TST: Add tests for #55431
- [x] closes #55431 
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).

















Created unit test in `tests/reshape/test_cut.py` to ensure `pd.cut` handles `DatetimeArray` without raising an `AttributeError`. 
Thanks @jasonmokk 