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

idea/testData/multiModuleQuickFix/object/header/header.kt

@@ -1,5 +1,5 @@
 // "Create actual class for platform JVM" "true"
 
-header object <caret>Object {
+expect object <caret>Object {
     fun foo(): String
 }

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

@@ -1,5 +1,5 @@
 // "Create actual class for platform JVM" "true"
 
-header object Object {
+expect object Object {
     fun foo(): String
 }