Auto merge of #93762 - matthiaskrgr:rollup-vdjpfmz, r=matthiaskrgr

Rollup of 9 pull requests

Successful merges:

 - #86497 (Add {floor,ceil}_char_boundary methods to str)
 - #92695 (Add `#[no_coverage]` tests for nested functions)
 - #93521 (Fix hover effects in sidebar)
 - #93568 (Include all contents of first line of scraped item in Rustdoc)
 - #93569 (rustdoc: correct unclosed HTML tags as generics)
 - #93672 (update comment wrt const param defaults)
 - #93715 (Fix horizontal trim for block doc comments)
 - #93721 (rustdoc: Special-case macro lookups less)
 - #93728 (Add in ValuePair::Term)

Failed merges:

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