no error when `abstractmethod` decorator is above `property` decorator

[DetachHead]

Describe the problem, ie expected/actual result (if it's not blatantly obvious)

AttributeError: attribute '__isabstractmethod__' of 'property' objects is not writable

Gist to reproduce

from abc import abstractmethod


class Foo:
    @abstractmethod
    @property
    def foo(self) -> int:
        ...

Basedmypy version

No response

Command-line flags

No response

Configuration options from pyproject.toml (and other config files)

No response

Python version used

No response

Operating system and version

No response

[KotlinIsland]

So abstractmethod takes a Callable, and in this case we are passing it a property object, which is not callable.

But in reality, all abstractmethod does, is sets an attribute __isabstractmethod__ on the passed object:

def abstractmethod(funcobj):
    funcobj.__isabstractmethod__ = True
    return funcobj

property is a native class whose attributes can't be arbitrarily set.