Use Generator instead of Iterator for 3rd-party context managers (#12481)

stubs/pynput/pynput/keyboard/_base.pyi

@@ -1,7 +1,7 @@
 import contextlib
 import enum
 import sys
-from collections.abc import Callable, Iterable, Iterator
+from collections.abc import Callable, Generator, Iterable, Iterator
 from typing import Any, ClassVar
 from typing_extensions import Self
 
@@ -108,7 +108,7 @@ class Controller:
     def tap(self, key: str | Key | KeyCode) -> None: ...
     def touch(self, key: str | Key | KeyCode, is_press: bool) -> None: ...
     @contextlib.contextmanager
-    def pressed(self, *args: str | Key | KeyCode) -> Iterator[None]: ...
+    def pressed(self, *args: str | Key | KeyCode) -> Generator[None]: ...
     def type(self, string: str) -> None: ...
     @property
     def modifiers(self) -> contextlib.AbstractContextManager[Iterator[set[Key]]]: ...