Auto merge of #139220 - matthiaskrgr:rollup-v1un5wz, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #110406 (rustdoc-json: Add test for #[automatically_derived] attribute)
 - #138790 (Note potential but private items in show_candidates)
 - #139002 (Add release notes for 1.86.0)
 - #139022 (increment depth of nested obligations)
 - #139129 (Add tests for slice bounds check optimization)
 - #139188 (PassWrapper: adapt for llvm/llvm-project@94122d58fc77079a291a3d008914…)
 - #139193 (Feed HIR for by-move coroutine body def, since the inliner tries to read its attrs)
 - #139202 (Improve docs of ValTreeKind)

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