ruff

486cdd68 - [ty] Treat type alias values as type-form contexts in semantic tokens (#24478)

[ty] Treat type alias values as type-form contexts in semantic tokens (#24478) ## Summary Given: ```python from typing import IO, TypeAlias def takes_file(x: IO[str]) -> None: ... type NewStyle = IO[str] LegacyStyle: TypeAlias = IO[str] ``` Previously, only `x: IO[str]` was visited as a type form, so the other two `IO` tokens could've been colored like values. We now treat alias right-hand sides as type forms to ensure they're colored as types.