Rollup merge of #98939 - GuillaumeGomez:rustdoc-disamb-impls, r=notriddle

rustdoc: Add more semantic information to impl IDs

Take over of #92745.

I fixed the last remaining issue for the links in the sidebar (mentioned by `@jsha)` and fixed the few links broken in the std/core docs.

cc `@camelid`
r? `@notriddle`

diff --cc src/librustdoc/html/render/print_item.rs
Simple merge