QuickFixMultiModule: change tests structure

idea/testData/multiModuleQuickFix/createActual/sealed/header/header.kt

@@ -0,0 +1,7 @@
+// "Create actual class for module testModule_JS (JS)" "true"
+
+expect sealed class <caret>Sealed {
+    object Obj : Sealed
+
+    class Klass(x: Int) : Sealed
+}

idea/testData/multiModuleQuickFix/createActual/sealed/header/header.kt.after

@@ -0,0 +1,7 @@
+// "Create actual class for module testModule_JS (JS)" "true"
+
+expect sealed class Sealed {
+    object Obj : Sealed
+
+    class Klass(x: Int) : Sealed
+}