BUG: np.isinf, np.isfinite, np.isnan with DTI[dt64tz]
- [ ] closes #xxxx
- [x] tests added / passed
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit) for how to run them
- [x] whatsnew entry

> pandas/core/arrays/base.py:1394: error: "ExtensionArray" has no attribute "_data"  [attr-defined]

from this PR? user facing? > user facing?

yes, will add whatsnew updated + green