FIR: Rename FirSuperTypeScope and reuse it for type parameter type

It would allow ConeKotlinType.scope return FirTypeScope
and thus pulling down org.jetbrains.kotlin.fir.scopes.FirScope#processOverriddenFunctions
(See the following commits)

compiler/testData/codegen/box/casts/intersectionTypeMultipleBounds.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface A {
     fun foo(): Any?
     fun bar(): String
@@ -20,4 +19,4 @@ class C : A, B {
     override fun bar() = "ok"
 }
 
-fun box(): String = bar(C())
+fun box(): String = bar(C())