remove bound var hack in `resolve`

somehow dropped that change from rust-lang#98900.

r? `@jackh726`

doc: fix minor typo

Equate fn outputs when inferring RPITIT hidden types

When we are trying to infer the hidden types for RPITITs, we need to equate the output tys instead of just subtyping them. For example:

```rust
trait Foo { fn bar() -> impl Sized {} }

impl Foo for () { fn bar() -> &'static str { "" } }
```

If we just subtype the signatures `fn() -> &'static str <: fn() -> _#1t` (where `_#1t` is the variable we've used to infer `impl Sized`), we'll end up `&'static str <: _#1t`, which causes us to infer `_#1t = #'_#2r str`, where `'_#2r` is unconstrained, which gets fixed up to `ReEmpty`, and which is certainly not what we want.

I can't actually think of a way to make this fail to compile, because during borrowck we've already done the method probe, and so we just look at the `impl` method signature and see the `&'static str` any time we call `<() as Foo>::bar()`. But this _does_ cause the ICE [here](rust-lang#98559 (comment)) in `@jackh726's` "Remove ReEmpty" PR (rust-lang#98559) to stop ICEing, because after that PR we were leaking unconstrained region variables into the typeck results.

r? types

…le, r=GuillaumeGomez

rustdoc: avoid cleaning modules with duplicate names

Fixes rust-lang#83375

…llot

Move `Queries::new` out of the macro

Split out from rust-lang#101178 to make sure it's not contributing to the perf impact.

r? `@cjgillot`

…est, r=Dylan-DPC

Update browser-ui-test version to 0.9.8

This version improves the error output mostly.

r? `@Dylan-DPC`