ruff

29bf84e0 - [ty] Preserve `Divergent` when materializing recursive aliases (#24245)

[ty] Preserve `Divergent` when materializing recursive aliases (#24245) ## Summary `TypeMapping::Materialize` now preserves `DynamicType::Divergent` instead of collapsing it to `object` or `Never`, so the cycle marker remains intact during recursive alias solving. Closes https://github.com/astral-sh/ty/issues/3134.