invent a way to make abstract methods work with mro

```py
from abc import abstractmethod


class Base:
    @property
    def t(self) -> int:
        return 1


class A:
    @property
    @abstractmethod
    def t(self) -> object: ...


class B(A, Base):  # won't work because it will call `t` in `A`
    pass


class B2(Base, A):
    pass
```

This code should be perfectly valid, but it's not