FIR: handle labeled super reference properly

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/ImplementationConfigurator.kt

@@ -105,7 +105,7 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
         impl(delegatedConstructorCall) {
             default(
                 "calleeReference",
-                "if (isThis) FirExplicitThisReference(source, null) else FirExplicitSuperReference(source, constructedTypeRef)"
+                "if (isThis) FirExplicitThisReference(source, null) else FirExplicitSuperReference(source, null, constructedTypeRef)"
             )
             default("isSuper") {
                 value = "!isThis"

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/NodeConfigurator.kt

@@ -521,6 +521,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
         }
 
         superReference.configure {
+            +stringField("labelName", nullable = true)
             +field("superTypeRef", typeRef, withReplace = true)
         }