RET501 should exempt overriding class methods #12198
Description
If a parent class defines a return type hint for a method, then it makes sense to keep the return None explicit.
This is similar to #3704/#3705, but it involves looking also at the parent classes.
class BaseClass:
def get_value(self) -> str | None:
return "a value"
class Class(BaseClass):
def get_value(self) -> None:
return None
# RET501 [*] Do not explicitly `return None` in function if it is the only possible return valueBased on home-assistant/core#115031