Generate super classes and overridden functions in proper scope

Such references require proper scope so that local symbols are bound.
Example:

```
fun <T> outer() {
    abstract class ALocal<S : T> {
        abstract fun bar()
    }

    class Local<S : T> : ALocal<S>() {
        override fun bar() {}
    }
}
```

Here local classes have type parameters with upper bounds depending on
function type parameters, and members overriding members in other local
classes.

compiler/testData/ir/irText/expressions/argumentMappedWithError.txt

@@ -1,6 +1,8 @@
 FILE fqName:<root> fileName:/argumentMappedWithError.kt
   FUN name:convert visibility:public modality:FINAL <R> ($receiver:kotlin.Number) returnType:R flags:
     TYPE_PARAMETER name:R index:0 variance: upperBounds:[kotlin.Number]
+      superClassifiers:
+        CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Number modality:ABSTRACT visibility:public flags:
     $receiver: VALUE_PARAMETER name:<this> type:kotlin.Number flags:
     BLOCK_BODY
       RETURN type=kotlin.Nothing from='convert() on Number: R'