Bug 1990108 (part 1) - Stabilize raw_ref_op in our patched Rust compiler. r=glandium

This applies the patches in rust-lang/rust#127679, although
miro and test chunks were removed as they didn't apply.

Differential Revision: https://phabricator.services.mozilla.com/D267338

UltraBlame original commit: 88ee9a71fe7da64fac63acf38b79c20e7961f4e8

Author: marco-c