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

idea/testData/multiModuleQuickFix/memberValToExtensionByHeader/js/js.kt

@@ -1,3 +1,3 @@
-impl class Foo {
-    impl val foo get() = 1
+actual class Foo {
+    actual val foo get() = 1
 }

idea/testData/multiModuleQuickFix/memberValToExtensionByHeader/js/js.kt.after

@@ -1,4 +1,4 @@
-impl class Foo {
+actual class Foo {
 }
 
-impl val Foo.foo get() = 1
+actual val Foo.foo get() = 1