[FIR] Use super<Enum> as delegated calls in enum constructors

compiler/testData/ir/irText/expressions/temporaryInEnumEntryInitializer.fir.txt

@@ -13,7 +13,8 @@ FILE fqName:<root> fileName:/temporaryInEnumEntryInitializer.kt
     CONSTRUCTOR visibility:private <> (x:kotlin.String?) returnType:<root>.En [primary]
       VALUE_PARAMETER name:x index:0 type:kotlin.String?
       BLOCK_BODY
-        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        ENUM_CONSTRUCTOR_CALL 'public constructor <init> (name: kotlin.String, ordinal: kotlin.Int) [primary] declared in kotlin.Enum'
+          <E>: <root>.En
         INSTANCE_INITIALIZER_CALL classDescriptor='CLASS ENUM_CLASS name:En modality:FINAL visibility:public superTypes:[kotlin.Enum<<root>.En>]'
     PROPERTY name:x visibility:public modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String? visibility:private [final]