B008 doesn't report when the annotation refers to an immutable type, but RUF009 does

[InSyncWithFoo]

Minimal reproducible example (playground):

def _(
    this_is_fine: int = f(),           # No error
    this_is_not: list[int] = f()       # B008: Do not perform function call `f` in argument defaults
): ...


@dataclass
class _:
    this_is_not_fine: list[int] = f()  # RUF009: Do not perform function call `f` in dataclass defaults
    this_is_also_not: int = f()        # RUF009: Do not perform function call `f` in dataclass defaults

RUF009 should behave similar to B008 and ignore attributes with immutable types.

[InSyncWithFoo]

This should make for a good first issue.

[dhruvmanila]

Yeah, this seems reasonable. I think it's because we don't look at the annotation which can be done using is_immutable_annotation.