mock.patch.object type annotation fails with **kwargs

[graingert]

https://mypy-play.net/?mypy=latest&python=3.10&gist=6f7d6d1036646b8e8a41ed3a5dab3b98&flags=strict

from unittest import mock
import subprocess


def foo() -> None:
    with mock.patch.object(
        subprocess,
        "Popen",
        **{"return_value.communicate.side_effect": KeyboardInterrupt}
    ):
        pass

[srittau]

mock.patch.object() should probably be marked as a staticmethod in the stubs. (The same for dict(), multiple(), and stopall().)

[AlexWaygood]

Reopening as per #7543 (review) -- the original snippet still causes mypy to emit a false-positive error, even using mypy master and typeshed master.