Teach structured errors to display short `Ty`

Make it so that every structured error annotated with `#[derive(Diagnostic)]` that has a field of type `Ty<'_>`, the printing of that value into a `String` will look at the thread-local storage `TyCtxt` in order to shorten to a length appropriate with the terminal width. When this happen, the resulting error will have a note with the file where the full type name was written to.

```
error[E0618]: expected function, found `((..., ..., ..., ...), ..., ..., ...)``
 --> long.rs:7:5
  |
6 | fn foo(x: D) { //~ `x` has type `(...
  |        - `x` has type `((..., ..., ..., ...), ..., ..., ...)`
7 |     x(); //~ ERROR expected function, found `(...
  |     ^--
  |     |
  |     call expression requires function
  |
  = note: the full name for the type has been written to 'long.long-type-14182675702747116984.txt'
  = note: consider using `--verbose` to print the full type name to the console
```

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_trait_selection/src/errors/note_and_explain.rs b/compiler/rustc_trait_selection/src/errors/note_and_explain.rs
index 4601ddf678a..46622246a17 100644
--- a/compiler/rustc_trait_selection/src/errors/note_and_explain.rs
+++ b/compiler/rustc_trait_selection/src/errors/note_and_explain.rs
@@ -105,7 +105,7 @@ pub enum SuffixKind {
 }
 
 impl IntoDiagArg for PrefixKind {
-    fn into_diag_arg(self) -> rustc_errors::DiagArgValue {
+    fn into_diag_arg(self, _: &mut Option<std::path::PathBuf>) -> rustc_errors::DiagArgValue {
         let kind = match self {
             Self::Empty => "empty",
             Self::RefValidFor => "ref_valid_for",
@@ -127,7 +127,7 @@ impl IntoDiagArg for PrefixKind {
 }
 
 impl IntoDiagArg for SuffixKind {
-    fn into_diag_arg(self) -> rustc_errors::DiagArgValue {
+    fn into_diag_arg(self, _: &mut Option<std::path::PathBuf>) -> rustc_errors::DiagArgValue {
         let kind = match self {
             Self::Empty => "empty",
             Self::Continues => "continues",