Typeshed cherry-pick: Ignore mypy errors in Python 2 builtins and typing (#7894) (#12826)

From python/typeshed#7894.

Author: JukkaL

mypy/typeshed/stdlib/@python2/__builtin__.pyi

@@ -711,7 +711,7 @@ class set(MutableSet[_T], Generic[_T]):
     def __and__(self, s: AbstractSet[object]) -> set[_T]: ...
     def __iand__(self: Self, s: AbstractSet[object]) -> Self: ...
     def __or__(self, s: AbstractSet[_S]) -> set[_T | _S]: ...
-    def __ior__(self: Self, s: AbstractSet[_T]) -> Self: ...
+    def __ior__(self: Self, s: AbstractSet[_T]) -> Self: ...  # type: ignore[override,misc]
     @overload
     def __sub__(self: set[str], s: AbstractSet[Text | None]) -> set[_T]: ...
     @overload
@@ -721,7 +721,7 @@ class set(MutableSet[_T], Generic[_T]):
     @overload
     def __isub__(self, s: AbstractSet[_T | None]) -> set[_T]: ...
     def __xor__(self, s: AbstractSet[_S]) -> set[_T | _S]: ...
-    def __ixor__(self: Self, s: AbstractSet[_T]) -> Self: ...
+    def __ixor__(self: Self, s: AbstractSet[_T]) -> Self: ...  # type: ignore[override,misc]
     def __le__(self, s: AbstractSet[object]) -> bool: ...
     def __lt__(self, s: AbstractSet[object]) -> bool: ...
     def __ge__(self, s: AbstractSet[object]) -> bool: ...

mypy/typeshed/stdlib/@python2/builtins.pyi

@@ -711,7 +711,7 @@ class set(MutableSet[_T], Generic[_T]):
     def __and__(self, s: AbstractSet[object]) -> set[_T]: ...
     def __iand__(self: Self, s: AbstractSet[object]) -> Self: ...
     def __or__(self, s: AbstractSet[_S]) -> set[_T | _S]: ...
-    def __ior__(self: Self, s: AbstractSet[_T]) -> Self: ...
+    def __ior__(self: Self, s: AbstractSet[_T]) -> Self: ...  # type: ignore[override,misc]
     @overload
     def __sub__(self: set[str], s: AbstractSet[Text | None]) -> set[_T]: ...
     @overload
@@ -721,7 +721,7 @@ class set(MutableSet[_T], Generic[_T]):
     @overload
     def __isub__(self, s: AbstractSet[_T | None]) -> set[_T]: ...
     def __xor__(self, s: AbstractSet[_S]) -> set[_T | _S]: ...
-    def __ixor__(self: Self, s: AbstractSet[_T]) -> Self: ...
+    def __ixor__(self: Self, s: AbstractSet[_T]) -> Self: ...  # type: ignore[override,misc]
     def __le__(self, s: AbstractSet[object]) -> bool: ...
     def __lt__(self, s: AbstractSet[object]) -> bool: ...
     def __ge__(self, s: AbstractSet[object]) -> bool: ...

mypy/typeshed/stdlib/@python2/typing.pyi

@@ -239,9 +239,9 @@ class MutableSet(AbstractSet[_T], Generic[_T]):
     def clear(self) -> None: ...
     def pop(self) -> _T: ...
     def remove(self, element: _T) -> None: ...
-    def __ior__(self: Self, s: AbstractSet[_T]) -> Self: ...
+    def __ior__(self: Self, s: AbstractSet[_T]) -> Self: ...  # type: ignore[override,misc]
     def __iand__(self: Self, s: AbstractSet[Any]) -> Self: ...
-    def __ixor__(self: Self, s: AbstractSet[_T]) -> Self: ...
+    def __ixor__(self: Self, s: AbstractSet[_T]) -> Self: ...  # type: ignore[override,misc]
     def __isub__(self: Self, s: AbstractSet[Any]) -> Self: ...
 
 class MappingView(object):