Rollup merge of #107306 - compiler-errors:correct-sugg-for-closure-arg-needs-borrow...

Correct suggestions for closure arguments that need a borrow

Fixes #107301 by dealing with binders correctly
Fixes another issue where we were suggesting adding just `&` when we expected `&mut _` in a closure arg

diff --cc compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
Simple merge