`unsafe-variance` error code is actually `misc`

[DetachHead]

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

test.py:21:26: error: This usage of this covariant type variable is unsafe as an input parameter.
If this is intentional and you know what you are doing, you can ignore
this line with 'unsafe-variance'  [misc]
        def foo(self, value: T_co):  # type:ignore[unsafe-variance]
                             ^
test.py:21:26: note: Error code "misc" not covered by "type: ignore" comment
Found 2 errors in 1 file (checked 1 source file)

Gist to reproduce

from typing import Generic

from basedtyping import T_co


class Foo(Generic[T_co]):
    def foo(self, value: T_co):  # type:ignore[unsafe-variance]
        ...

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

[KotlinIsland]

what the

[KotlinIsland]

This is a regression caused by upstream changes and lack of tests