converted mutablemapping.pop keys to object

Author: randolf-scholz

stdlib/typing.pyi

@@ -792,11 +792,11 @@ class MutableMapping(Mapping[_KT, _VT]):
     def __delitem__(self, key: _KT, /) -> None: ...
     def clear(self) -> None: ...
     @overload
-    def pop(self, key: _KT, /) -> _VT: ...
+    def pop(self, key: object, /) -> _VT: ...
     @overload
-    def pop(self, key: _KT, default: _VT, /) -> _VT: ...
+    def pop(self, key: object, default: _VT, /) -> _VT: ...
     @overload
-    def pop(self, key: _KT, default: _T, /) -> _VT | _T: ...
+    def pop(self, key: object, default: _T, /) -> _VT | _T: ...
     def popitem(self) -> tuple[_KT, _VT]: ...
     # This overload should be allowed only if the value type is compatible with None.
     #