Rollup merge of #67406 - ohadravid:suggest-assoc-type, r=estebank

Suggest associated type when the specified one cannot be found

Fixes #67386, so code like this:
```
use std::ops::Deref;

fn homura<T: Deref<Trget = i32>>(_: T) {}

fn main() {}
```

results in:
```
error[E0220]: associated type `Trget` not found for `std::ops::Deref`
 --> type-binding.rs:6:20
  |
6 | fn homura<T: Deref<Trget = i32>>(_: T) {}
  |                    ^^^^^^^^^^^ help: there is an associated type with a similar name: `Target`

error: aborting due to previous error
```

(The `help` is new)

I used an `all_candidates: impl Fn() -> Iterator<...>` instead of `collect`ing to avoid the cost of allocating the Vec when no errors are found, at the expense of a little added complexity.

r? @estebank

0 files changed, 0 insertions, 0 deletions