When we point at a binding to suggest giving it a type, erase all the
type for ADTs that have been resolved, leaving only the ones that could
not be inferred. For small shallow types this is not a problem, but for
big nested types with lots of params, this can otherwise cause a lot of
unnecessary visual output.

When the value of a const param isn't inferred, replace it with the
param name from the definition.

…=nagisa

Only shown relevant type params in E0283 label

When we point at a binding to suggest giving it a type, erase all the
type for ADTs that have been resolved, leaving only the ones that could
not be inferred. For small shallow types this is not a problem, but for
big nested types with lots of params, this can otherwise cause a lot of
unnecessary visual output.

Make rustdoc headings black, and markdown blue

Demo:

https://rustdoc.crud.net/jsha/heading-color/std/string/index.html#structs
https://rustdoc.crud.net/jsha/heading-color/std/string/struct.String.html#examples

Fixes rust-lang#91304

r? `@camelid` /cc `@GuillaumeGomez`

(Note: we may want to make rustdoc headings and markdown headings the same color -- rust-lang#90245 -- but we would want to do that intentionally; this is fixing up a change that did so accidentally)

…static-morse

Add test for packed drops in generators

r? `@ecstatic-morse`

Simplify collection of in-band lifetimes

Split from rust-lang#91403

r? ``@oli-obk``

update Miri

Fixes rust-lang#91649
r? `@ghost`

… r=notriddle

Fix indent of itemTypes in search.js

It has been bugging me for quite some time now. Finally took the time to clean it up a bit.

r? `@notriddle`