Improve ruff_python_semantic::all::extract_all_names() - #11335

Summary

Following 22639c5, this function now lives in the ruff_python_semantic crate. That means we can simplify the function's signature: where previously it required a closure to be passed in, we can now simply pass in a reference to a SemanticModel instance. As well as simplifying the signature of the function, this also means we can make the function more accurate: it now recognises __all__ = builtins.list(["foo", "bar"]) as a valid __all__ definition, as well as __all__ = list(["foo", "bar"]).

Test Plan

I added a new pyflakes fixture. cargo test / cargo insta review.