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/cfg/complex.dot

@@ -204,7 +204,7 @@ digraph complex_kt {
                         color=blue
                         62 [label="Enter loop condition"];
                         63 [label="Access variable R|<local>/<iterator>|"];
-                        64 [label="Function call: R|<local>/<iterator>|.R|kotlin/collections/Iterator.hasNext|()"];
+                        64 [label="Function call: R|<local>/<iterator>|.R|SubstitutionOverride<kotlin/collections/Iterator.hasNext: R|kotlin/Boolean|>|()"];
                         65 [label="Exit loop condition"];
                     }
                     subgraph cluster_23 {