[FIR2IR] Correctly generate delegating constructor call for secondary constructors in enums

^KT-56927 Fxied

compiler/testData/codegen/box/ir/enumClass2.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JS_IR, NATIVE
 // WITH_STDLIB
 import kotlin.test.assertEquals
 
@@ -16,4 +15,4 @@ fun box(): String {
     assertEquals(TestEnumClass.ZERO.x, 0)
 
     return "OK"
-}
+}