Revert "remove dict.__or__ overloads (#14284)"

This reverts commit bfb7342.

Author: ilevkivskyi

stdlib/builtins.pyi

@@ -1240,7 +1240,13 @@ class dict(MutableMapping[_KT, _VT]):
     def __reversed__(self) -> Iterator[_KT]: ...
     __hash__: ClassVar[None]  # type: ignore[assignment]
     def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
+    @overload
+    def __or__(self, value: dict[_KT, _VT], /) -> dict[_KT, _VT]: ...
+    @overload
     def __or__(self, value: dict[_T1, _T2], /) -> dict[_KT | _T1, _VT | _T2]: ...
+    @overload
+    def __ror__(self, value: dict[_KT, _VT], /) -> dict[_KT, _VT]: ...
+    @overload
     def __ror__(self, value: dict[_T1, _T2], /) -> dict[_KT | _T1, _VT | _T2]: ...
     # dict.__ior__ should be kept roughly in line with MutableMapping.update()
     @overload  # type: ignore[misc]