Multiple inheritance and ReadOnly issues?

I believe the following should be a passing test suite for multiple inheritance and ReadOnly:

from typing_extensions import TypedDict, Required, NotRequired, ReadOnly

class A(TypedDict):
  k: ReadOnly[Required[int]]
  
class B(TypedDict):
  k: ReadOnly[NotRequired[int]]

class C(A, B): pass

assert C.__required_keys__ == {'k'}
assert C.__optional_keys__ == set()

class D(B, A): pass 

assert D.__required_keys__ == {'k'}
assert D.__optional_keys__ == set()

class E(TypedDict):
  k: Required[int]
  
class F(A, E): pass

assert F.__readonly_keys__ == set()
assert F.__mutable_keys__ == {'k'}

class G(E, A): pass

assert G.__readonly_keys__ == set()
assert G.__mutable_keys__ == {'k'}

Unfortunately, with typing-extensions 4.9.0-rc1 in Python 3.10.1, every one of these properties is {'k'}

Exécutez le reproducer fourni avec typing-extensions 4.9.0-rc1 sur Python 3.10.1 et comparez chaque ensemble de clés signalé aux assertions attendues. Suivez la gestion de l’héritage multiple de TypedDict pour Required, NotRequired et ReadOnly, puis ajoutez une couverture de régression montrant que toutes les assertions réussissent.