Cleanup some known-bug issues
I went through most of the known-bug tests (except those under `tests/crashes`) and made sure the issue had the `S-bug-has-test` label and checked that the linked issue was open. This is a bunch of cleanups, mainly issues that have been closed and the tests should have been updated.
Importantly, there are many known-bug tests linking to #110395. This *probably* isn't right - that is a tracking issue. But I don't really know what the "right" thing to do here. Probably, most that are actually *supposed* to be tests for const trait need to be linked to *that* tracking issue. And any other tests that were mislabeled need to be handled accordingly e.g. #130482. cc `@fee1-dead`
Instead of
```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:20
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^ doesn't have a size known at compile-time
```
output
```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:29
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
```
deduplicate infer var instantiation
Having 3 separate implementations of one of the most subtle parts of our type system is not a good strategy if we want to maintain a sound type system ✨ while working on this I already found some subtle bugs in the existing code, so that's awesome 🎉 cc #121159
This was necessary as I am not confident in my nll changes in #119106, so I am first cleaning this up in a separate PR.
r? `@BoxyUwU`
