Mark arguments of typing.NamedTuple.__init__ as positional-only (#10292)

Author: AlexWaygood

stdlib/typing.pyi

@@ -854,9 +854,9 @@ class NamedTuple(tuple[Any, ...]):
     if sys.version_info >= (3, 12):
         __orig_bases__: ClassVar[tuple[Any, ...]]
     @overload
-    def __init__(self, typename: str, fields: Iterable[tuple[str, Any]] = ...) -> None: ...
+    def __init__(self, __typename: str, __fields: Iterable[tuple[str, Any]]) -> None: ...
     @overload
-    def __init__(self, typename: str, fields: None = None, **kwargs: Any) -> None: ...
+    def __init__(self, __typename: str, __fields: None = None, **kwargs: Any) -> None: ...
     @classmethod
     def _make(cls, iterable: Iterable[Any]) -> typing_extensions.Self: ...
     if sys.version_info >= (3, 8):