140f2fa5ae
chore: Improve how the other suggestions message gets rendered
Note: This change is part of my ongoing work to use `annotate-snippets` as `rustc`'s emitter
This change started as a way to remove some specialty code paths from `annotate-snippets`, by making the "and {} other candidates" message get rendered like a secondary message with no level, but turned into a fix for the message's Unicode output. Before this change, when using the Unicode output, the other suggestions message would get rendered outside of the main suggestion block, making it feel disconnected from what it was referring to. This change makes it so that the message is on the last line of the block, aligning its rendering with other secondary messages, and making it clear what the message is referring to.
Before:
```
error[E0433]: failed to resolve: use of undeclared type `IntoIter`
╭▸ $DIR/issue-82956.rs:28:24
│
LL │ let mut iter = IntoIter::new(self);
│ ━━━━━━━━ use of undeclared type `IntoIter`
╰╴
help: consider importing one of these structs
╭╴
LL + use std::array::IntoIter;
├╴
LL + use std::collections::binary_heap::IntoIter;
├╴
LL + use std::collections::btree_map::IntoIter;
├╴
LL + use std::collections::btree_set::IntoIter;
╰╴
and 9 other candidates
```
After:
```
error[E0433]: failed to resolve: use of undeclared type `IntoIter`
╭▸ $DIR/issue-82956.rs:28:24
│
LL │ let mut iter = IntoIter::new(self);
│ ━━━━━━━━ use of undeclared type `IntoIter`
╰╴
help: consider importing one of these structs
╭╴
LL + use std::array::IntoIter;
├╴
LL + use std::collections::binary_heap::IntoIter;
├╴
LL + use std::collections::btree_map::IntoIter;
├╴
LL + use std::collections::btree_set::IntoIter;
│
╰ and 9 other candidates
```
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| .gitattributes | ||
| .gitignore | ||
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| .mailmap | ||
| bootstrap.example.toml | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CODE_OF_CONDUCT.md | ||
| configure | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| INSTALL.md | ||
| LICENSE-APACHE | ||
| license-metadata.json | ||
| LICENSE-MIT | ||
| README.md | ||
| RELEASES.md | ||
| REUSE.toml | ||
| rust-bors.toml | ||
| rustfmt.toml | ||
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| typos.toml | ||
| x | ||
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