Make Any a proper class instead of an alias to object() (#13520)

stdlib/@tests/stubtest_allowlists/common.txt

@@ -464,6 +464,7 @@ typing._Final
 typing._Final.__init_subclass__
 typing\.Protocol
 typing(_extensions)?\._TypedDict
+typing(_extensions)?\.Any.*
 typing(_extensions)?\.Generic
 typing(_extensions)?\.TypedDict
 typing_extensions\.ParamSpec.*

stdlib/typing.pyi

@@ -130,8 +130,7 @@ if sys.version_info >= (3, 12):
 if sys.version_info >= (3, 13):
     __all__ += ["get_protocol_members", "is_protocol", "NoDefault", "TypeIs", "ReadOnly"]
 
-Any = object()
-
+class Any: ...
 class _Final: ...
 
 def final(f: _T) -> _T: ...