`unsafe-variance` error appears on the getter return type instead of the setter input parameter when covariant generic is used with inferred setter input type

[DetachHead]

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

expected

class Foo(Generic[T_co]):
    @property
    def foo(self) -> T_co:
        ...

    @foo.setter
    def foo(self, value): # error: unsafe-variance
        ...

actual

class Foo(Generic[T_co]):
    @property
    def foo(self) -> T_co: # error: unsafe-variance
        ...

    @foo.setter
    def foo(self, value):
        ...

Gist to reproduce

from typing import Generic

from basedtyping import T_co


class Foo(Generic[T_co]):
    @property
    def foo(self) -> T_co:
        ...

    @foo.setter
    def foo(self, value):
        ...

Basedmypy version

1.4.0

Command-line flags

No response

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

No response

Python version used

3.10

Operating system and version

windows 10