TYP: make numpy.typing available from pandas._typing

[simonjayhawkins]

xref #41807 (comment)

this does not update the __array__ to to_numpy methods of EA, see #41185 (comment) but does need a couple of ignores till that is done.

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

[jreback]

does this require 1.21? (though passing for all so guess is no)

[simonjayhawkins]

for runtime, npt: Any = None means that the numpy version is not relevant. For type checking, import numpy.typing as npt so needs at least 1.20, but would not be checking without 1.21 anyway otherwise will get other errors.

[jreback]

thanks @simonjayhawkins