ruff

1734ddfb - [ty] Do not promote literals in contravariant positions of generic specializations (#21171)

[ty] Do not promote literals in contravariant positions of generic specializations (#21171) ## Summary closes https://github.com/astral-sh/ty/issues/1284 supersedes https://github.com/astral-sh/ruff/pull/20950 by @ibraheemdev ## Test Plan New regression test