False positive: `no-member` when inner function uses the `@classmethod` decorator

[LunaRood]

Bug description

def test():
    @classmethod
    def inner(cls):
        print(cls.thing)

Pylint seems to think that inner is a member of the test object, while in reality, it is not known at this point what inner might eventually be bound to.

Also note that this issue only occurs when using the @ decorator syntax. With classmethod(inner) the issue does not occur.

Configuration

No response

Command used

pylint -E a.py

Pylint output

************* Module a
a.py:4:14: E1101: Function 'test' has no 'thing' member (no-member)

Expected behavior

No error.

Pylint version

pylint 2.15.2
astroid 2.12.10
Python 3.10.7 (main, Sep  6 2022, 21:22:27) [GCC 12.2.0]

OS / Environment

No response

Additional dependencies

No response