Migration: header->expect & impl->actual in IDEA test data

idea/testData/multiModuleQuickFix/enum/header/header.kt

@@ -1,6 +1,6 @@
 // "Create actual class for platform JS" "true"
 
-header enum class <caret>MyEnum {
+expect enum class <caret>MyEnum {
     FIRST,
     SECOND,
     LAST;

idea/testData/multiModuleQuickFix/enum/header/header.kt.after

@@ -1,6 +1,6 @@
 // "Create actual class for platform JS" "true"
 
-header enum class MyEnum {
+expect enum class MyEnum {
     FIRST,
     SECOND,
     LAST;