FIR checker: substitute type parameters in dispatch receiver type

Consider the following code:

```
fun test(a: List<String>) {
  a.first()
}
```

The dispatch receiver type of `first` in this case is `List<T>` before
this change. After this change, it's `List<String>`.

In addition, this change also replace the dispatch receiver type with
the more specific type if available. For example, consider the following

```
class MyList: ArrayList<String>()

fun test(a: MyList) {
  a.get(0)
}
```
The dispatch receiver type of `get` is `MyList`, instead of
`ArrayList<String>`. That is, a fake override is created in this case.

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/manyLocalVariables.fir.txt

@@ -5,7 +5,7 @@ FILE: manyLocalVariables.kt
         lvar c: R|kotlin/Int| = Int(3)
          {
             lval <iterator>: R|kotlin/collections/IntIterator| = Int(0).R|kotlin/Int.rangeTo|(Int(5)).R|kotlin/ranges/IntProgression.iterator|()
-            while(R|<local>/<iterator>|.R|kotlin/collections/Iterator.hasNext|()) {
+            while(R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/IntIterator.hasNext: R|kotlin/Boolean|>|()) {
                 lval i: R|kotlin/Int| = R|<local>/<iterator>|.R|kotlin/collections/IntIterator.next|()
                 when () {
                     ==(R|<local>/a|, Int(2)) ->  {