Merge branch 'cleanup/util-2d-type-guards' into cleanup/util-2e-typing-refactor

Author: picnixz

sphinx/util/typing.py

@@ -254,7 +254,7 @@ def restify(cls: Any, mode: object = 'fully-qualified-except-typing') -> str:
             and cls.__origin__ is Union
         ):
             # *cls* is defined in ``typing``, and thus ``__args__`` must exist
-            return ' | '.join(restify(a, mode) for a in cls.__args__)  # type: ignore[attr-defined]
+            return ' | '.join(restify(a, mode) for a in cls.__args__)
         elif inspect.isgenericalias(cls):
             __origin__ = cls.__origin__
             if _is_annotated_form(__origin__):