Rollup merge of #154942 - aerooneqq:delegation-unlowered-path-ice, r=petrochenkov

delegation: generate more verbose error delegation

After this PR we generate more verbose error delegation including path lowering, as there can be other code in generic args as in rust-lang/rust#154820. Now we access information for delegation lowering through ty-level queries and they require that the code should be lowered, even if it is in unresolved delegation.

Fixes rust-lang/rust#154820, part of rust-lang/rust#118212.

r? @petrochenkov

Author: JonathanBrouwer