multiprocessing.Queue missing __setstate__ but contains __getstate__

[huntfx]

I noticed this when trying to subclass a queue, it fails on super().__setstate__(...).
Mypy seems happy with __getstate__, but not __setstate__, even though both exist.

https://mypy-play.net/?mypy=latest&python=3.12&gist=125d98f01321257f2e55a7b41536f8b0

import multiprocessing.queues
multiprocessing.queues.Queue.__getstate__
multiprocessing.queues.Queue.__setstate__

# error: "type[Queue[Any]]" has no attribute "__setstate__"  [attr-defined]

[srittau]

Neither __getstate__ nor __setstate__ are explicitly defined on Queue, but it inherits __getstate__ from object. In general, very few classes have __setstate__ defined in typeshed, but any improvement here are certainly welcome!