Rollup merge of #130758 - compiler-errors:ctype-recursion-limit, r=jieyouxu

Revert "Add recursion limit to FFI safety lint"

It's not necessarily clear if warning when we hit the recursion limit is the right thing to do, first of all.

**More importantly**, this PR was implemented incorrectly in the first place; it was not decrementing the recursion limit when stepping out of a type, so it would trigger when a ctype has more than RECURSION_LIMIT fields *anywhere* in the type's set of recursively reachable fields.

Reverts #130598
Reopens #130310
Fixes #130757

Author: compiler-errors