Correct several positional-only differences in third-party stubs (#7352)

stubs/mock/mock/mock.pyi

@@ -48,7 +48,7 @@ class _Call(tuple[Any, ...]):
         self, value: Any = ..., name: Any | None = ..., parent: Any | None = ..., two: bool = ..., from_kall: bool = ...
     ) -> None: ...
     def __eq__(self, other: object) -> bool: ...
-    def __ne__(self, other: object) -> bool: ...
+    def __ne__(self, __other: object) -> bool: ...
     def __call__(self, *args: Any, **kwargs: Any) -> _Call: ...
     def __getattr__(self, attr: str) -> Any: ...
     @property