Auto merge of #121636 - matthiaskrgr:rollup-1tt2o5n, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #121389 (llvm-wrapper: fix few warnings)
 - #121493 (By changing some attributes to only_local, reducing encoding attributes in the crate metadate.)
 - #121615 (Move `emit_stashed_diagnostic` call in rustfmt.)
 - #121617 (Actually use the right closure kind when checking async Fn goals)
 - #121628 (Do not const prop unions)
 - #121629 (fix some references to no-longer-existing ReprOptions.layout_seed)

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

Author: bors