Auto merge of rust-lang#103220 - compiler-errors:deny-infers, r=lcnr

Deny hashing ty/re/ct inference variables

cc `@cjgillot` and rust-lang#102695 (comment)
r? `@lcnr`

best reviewed one commit at a time, mostly because the second commit that fixes `ClosureOutlivesRequirement` is mostly noise because of losing its `<'tcx>` lifetime parameter.