Auto merge of #51762 - petrochenkov:oh-hi-mark, r=oli-obk

hygiene: Implement transparent marks and use them for call-site hygiene in proc-macros

Fixes https://github.com/rust-lang/rust/issues/50050

diff --cc src/librustc/hir/map/definitions.rs
Simple merge

diff --cc src/librustc_resolve/lib.rs
Simple merge

diff --cc src/libsyntax/parse/parser.rs
Simple merge