…n-ice, r=notriddle

Fix generic impl rustdoc json output

Fixes rust-lang#97986.

The problem in case of generic trait impl is that the trait's items are the same for all the types afterward. But since they're the same, it's safe for rustdoc-json to just ignore them.

A little representation of what's going on:

```rust
trait T {
    fn f(); // <- defid 0
}

impl<Y> T for Y {
    fn f() {} // <- defid 1
}

struct S; // <- defid 1 (since it matches `impl<Y> T for Y`
```

cc `@Urgau`

r? `@CraftSpider`

…n-ice, r=notriddle

Fix generic impl rustdoc json output

Fixes rust-lang#97986.

The problem in case of generic trait impl is that the trait's items are the same for all the types afterward. But since they're the same, it's safe for rustdoc-json to just ignore them.

A little representation of what's going on:

```rust
trait T {
    fn f(); // <- defid 0
}

impl<Y> T for Y {
    fn f() {} // <- defid 1
}

struct S; // <- defid 1 (since it matches `impl<Y> T for Y`
```

cc ``@Urgau``

r? ``@CraftSpider``

Rollup of 7 pull requests

Successful merges:

 - rust-lang#97202 (os str capacity documentation)
 - rust-lang#97964 (Fix suggestions for `&a: T` parameters)
 - rust-lang#98053 (Fix generic impl rustdoc json output)
 - rust-lang#98059 (Inline `const_eval_select`)
 - rust-lang#98092 (Fix sidebar items expand collapse)
 - rust-lang#98119 (Refactor path segment parameter error)
 - rust-lang#98135 (Add regression test for rust-lang#93775)

Failed merges:

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

…doc-json, r=GuillaumeGomez

rustdoc-json: Allow Typedef to be different in sanity assert

Closes rust-lang#98547

This fix is a natural extension of rust-lang#98053.

r? `@notriddle`

(Since you reviewed the other PR.)

CC `@GuillaumeGomez`

`@rustbot` labels +A-rustdoc-json +T-rustdoc