Auto merge of #94935 - matthiaskrgr:rollup-2o2kyz6, r=matthiaskrgr

Auto merge of #94935 - matthiaskrgr:rollup-2o2kyz6, r=matthiaskrgr

Rollup of 5 pull requests

Successful merges:

 - #90621 (Stabilise `aarch64_target_feature`)
 - #93977 (Type params and assoc types have unit metadata if they are sized)
 - #94670 (Improve `expect` impl and handle `#[expect(unfulfilled_lint_expectations)]` (RFC 2383))
 - #94884 (Fix remaining meta-variable expression TODOs)
 - #94931 (update miri)

Failed merges:

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