Auto merge of #106054 - matthiaskrgr:rollup-38epsfh, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #105567 (KCFI test: Also support LLVM 16 output)
 - #105847 (Ensure param-env is const before calling `eval_to_valtree`)
 - #105983 (Add a missing early return in drop tracking `handle_uninhabited_return`)
 - #106027 (rustdoc: simplify CSS and DOM for more-scraped-examples)
 - #106035 (Migrate search tab title color to CSS variable)
 - #106037 (Add regression test for #94293)

Failed merges:

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

Author: bors