function-call-in-default-argument (B008) exception, `frozenset`, not treated as exception

### Summary Rule [function-call-in-default-argument (B008)](https://docs.astral.sh/ruff/rules/function-call-in-default-argument/) reads, "Parameters with immutable type annotations will be ignored by this rule." Python documentation reads, "[The `frozenset` type is immutable.](https://docs.python.org/3/library/stdtypes.html#set-types-set-frozenset)" However, this triggers B008: ```python def functionB008(anArgument: frozenset[str] = aFunction()) -> None: pass ``` [Playground](https://play.ruff.rs/efaef74f-3450-4578-b334-909ee01db9bb) ### Version v0.15.13