TYP: make numpy.typing available from pandas._typing
xref https://github.com/pandas-dev/pandas/issues/41807#issuecomment-859372500

this does not update the `__array__` to `to_numpy` methods of EA, see https://github.com/pandas-dev/pandas/pull/41185#issuecomment-852469918 but does need a couple of ignores till that is done.

(we are removing 3 anyway, so a net reduction in ignores :smile:, and reducing false positives for users)

