GH-96079 Fix missing field name for _AnnotatedAlias (#96080)

Author: iyume

Lib/test/test_typing.py

@@ -7143,6 +7143,7 @@ def test_special_attrs(self):
             typing.Self: 'Self',
             # Subscribed special forms
             typing.Annotated[Any, "Annotation"]: 'Annotated',
+            typing.Annotated[int, 'Annotation']: 'Annotated',
             typing.ClassVar[Any]: 'ClassVar',
             typing.Concatenate[Any, SpecialAttrsP]: 'Concatenate',
             typing.Final[Any]: 'Final',

Lib/typing.py

@@ -2101,7 +2101,7 @@ def __init__(self, origin, metadata):
         if isinstance(origin, _AnnotatedAlias):
             metadata = origin.__metadata__ + metadata
             origin = origin.__origin__
-        super().__init__(origin, origin)
+        super().__init__(origin, origin, name='Annotated')
         self.__metadata__ = metadata
 
     def copy_with(self, params):
@@ -2134,6 +2134,9 @@ def __getattr__(self, attr):
             return 'Annotated'
         return super().__getattr__(attr)
 
+    def __mro_entries__(self, bases):
+        return (self.__origin__,)
+
 
 class Annotated:
     """Add context specific metadata to a type.

Misc/NEWS.d/next/Library/2022-08-31-11-10-21.gh-issue-96079.uqrXdJ.rst

@@ -0,0 +1 @@
+In :mod:`typing`, fix missing field ``name`` and incorrect ``__module__`` in _AnnotatedAlias.