B027 false-positive on @overloaded methods

[jwodder]

Running flake8 on the following code with flake8-bugbear 22.10.25:

import abc
from typing import IO, Literal, overload

class Opener(abc.ABC):
    @overload
    def open(self, mode: Literal["r"] = "r") -> IO[str]:
        ...

    @overload
    def open(self, mode: Literal["rb"] = "rb") -> IO[bytes]:
        ...

    @abc.abstractmethod
    def open(self, mode: Literal["r", "rb"] = "r") -> IO:
        ...

results in reports of B027 violations for the @overload-decorated open() methods, which is wrong.

[jakkdl]

Yeah @overload should definitely be ignored as well. @Zac-HD