Add __replace__ to namedtuple and structseq (#11939)

mypy will need its own change to truly understand namedtuple

stdlib/typing.pyi

@@ -935,6 +935,8 @@ class NamedTuple(tuple[Any, ...]):
     def _make(cls, iterable: Iterable[Any]) -> typing_extensions.Self: ...
     def _asdict(self) -> dict[str, Any]: ...
     def _replace(self, **kwargs: Any) -> typing_extensions.Self: ...
+    if sys.version_info >= (3, 13):
+        def __replace__(self, **kwargs: Any) -> typing_extensions.Self: ...
 
 # Internal mypy fallback type for all typed dicts (does not exist at runtime)
 # N.B. Keep this mostly in sync with typing_extensions._TypedDict/mypy_extensions._TypedDict