Auto merge of #128529 - matthiaskrgr:rollup-gzq2slo, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #126818 (Better handle suggestions for the already present code and fix some suggestions)
 - #128436 (Update sysinfo version to 0.31.2)
 - #128453 (raw_eq: using it on bytes with provenance is not UB (outside const-eval))
 - #128491 ([`macro_metavar_expr_concat`] Dogfooding)
 - #128494 (MIR required_consts, mentioned_items: ensure we do not forget to fill these lists)
 - #128521 (rustdoc: Remove dead opaque_tys rendering logic)

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

Author: bors