Auto merge of #106773 - Nilstrieb:rollup-sq73pyg, r=Nilstrieb

Rollup of 6 pull requests

Successful merges:

 - #105806 (Support eager subdiagnostics again)
 - #106322 (Handle inference variables in `CollectAllMismatches` correctly)
 - #106579 (Suggest making private tuple struct field public)
 - #106714 (remove unreachable error code `E0490`)
 - #106751 (Fix rendering 'const' in header for intrinsics)
 - #106761 (Add `WaffleLapkin` to compiler reviewers)

Failed merges:

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

Author: bors