fix: Wrong closure kind deduction for closures with predicates
Completes #16472, fixes#16421
The changed closure kind deduction is mostly simlar to `rustc_hir_typeck/src/closure.rs`.
Porting closure sig deduction from it seems possible too and I'm considering doing it with another PR
This commit also adds `tracing` to NotificationDispatcher/RequestDispatcher,
bumps `rust-analyzer-salsa` to 0.17.0-pre.6, `always-assert` to 0.2, and
removes the homegrown `hprof` implementation in favor of a vendored
tracing-span-tree.
This makes code more readale and concise,
moving all format arguments like `format!("{}", foo)`
into the more compact `format!("{foo}")` form.
The change was automatically created with, so there are far less change
of an accidental typo.
```
cargo clippy --fix -- -A clippy::all -W clippy::uninlined_format_args
```
The old value was for the old chalk-engine solver, nowadays the newer chalk-recursive solver is used.
The new solver currently uses fuel a bit more quickly, so a higher value is needed.
Running analysis-stats showed that a value of 100 increases the amount of unknown types,
while for a value of 1000 it's staying mostly the same.
Two breaking changes:
- `TypeFolder` has been split into `TypeFolder` and `FallibleTypeFolder`
- `ProjectionTy::self_type_parameter()` has been removed
