Auto merge of #104555 - matthiaskrgr:rollup-tncyca8, r=matthiaskrgr

Auto merge of #104555 - matthiaskrgr:rollup-tncyca8, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #103852 (Don't remap early-bound regions for return-position `impl Trait` in trait originating from `impl`)
 - #104366 (Simplify settings theme choice)
 - #104433 (Fix `emit_unused_delims_expr` ICE)
 - #104444 (Fix ICE in in_operand for ty error)
 - #104483 (Convert predicates into Predicate in the Obligation constructor)
 - #104496 (Don't attempt to normalize compiler backtraces)
 - #104503 (rustdoc: remove redundant font-color CSS on `.where`)
 - #104508 (Check `dyn*` return type correctly)
 - #104515 (ICE fixing, remove is_tainted_by_errors since we have ty_error for delay bug)
 - #104532 (Migrate tooltip style to CSS variables)
 - #104545 (Readd the matches_macro diag item)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup