- Correctly set explicit receiver value.
- Restore original function call from FirImplicitFunctionCall (i.e.,
calls implicitly resolved to `invoke`) to get the correct name for
getting all candidates.
- Collect candidates at all tower levels.
Also make order of candidate calls in tests deterministic.
Use-site substitution override happens in situations like this:
```
interface List<A> { fun get(i: Int): A }
fun take(list: List<String>) {
list.get(10) // this call
}
```
We want to have those overrides unwrapped, because we don't want
to deal with a different KtSymbol for each possible use-site
^KT-50862 Fixed
This is a temporary fix to avoid crashes in FIR IDE
Of all stub types, only `ConeStubTypeForChainInference` is handled now,
so we can catch the other possible errors with stub types (in the
delegates' inference, for example)
The fix introduced in this commit should be reworked when KT-50916 is
fixed
^KTIJ-20826 Fixed
Denis.Zharkov