Auto merge of #107472 - matthiaskrgr:rollup-s9gn4n7, r=matthiaskrgr

Auto merge of #107472 - matthiaskrgr:rollup-s9gn4n7, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #107125 (Add and use expect methods to hir.)
 - #107172 (Reimplement NormalizeArrayLen based on SsaLocals)
 - #107177 (Keep all theme-updating logic together)
 - #107424 (Make Vec::clone_from and slice::clone_into share the same code)
 - #107455 (use a more descriptive name)
 - #107465 (`has_allow_dead_code_or_lang_attr` micro refactor)
 - #107469 (Change turbofish context link to an archive link)

Failed merges:

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