Rollup merge of #117891 - compiler-errors:recover-for-dyn, r=davidtwco

Recover `dyn` and `impl` after `for<...>`

Recover `dyn` and `impl` after `for<...>` in types. Reuses the logic for parsing bare trait objects, so it doesn't fix cases like `for<'a> dyn Trait + dyn Trait` or anything, but that seems somewhat of a different issue.

Parsing recovery logic is a bit involved, but I couldn't find a way to simplify it.

Fixes #117882

Author: compiler-errors