QuickFixMultiModule: change tests structure

idea/testData/multiModuleQuickFix/other/memberFunParameterToReceiverByImpl/header/header.kt

@@ -0,0 +1,7 @@
+expect class Foo {
+    fun foo(n: Int, s: String)
+}
+
+fun Foo.test() {
+    foo(1, "2")
+}

idea/testData/multiModuleQuickFix/other/memberFunParameterToReceiverByImpl/header/header.kt.after

@@ -0,0 +1,7 @@
+expect class Foo {
+    fun String.foo(n: Int)
+}
+
+fun Foo.test() {
+    "2".foo(1)
+}