Rollup merge of #35355 - shri3k:E0046, r=jonathandturner

Rollup merge of #35355 - shri3k:E0046, r=jonathandturner

Updates compiler error E0046 with new format

Addresses #35209 as part of #35233.
r? @jonathandturner

I've repeated the following in my code. If this is something not desirable then let me know if there's any process to make this any cleaner. Thank you.
```rust
missing_items.iter()
    .map(|name| name.to_string())
     .collect::<Vec<_>>().join("`, `"))
```