QuickFixMultiModule: change tests structure

GitOrigin-RevId: 497c9eec444e9773abe47e05953bccb224332ef8

plugins/kotlin/idea/tests/testData/multiModuleQuickFix/other/createVarInExpectClass/header/header.kt

@@ -0,0 +1,7 @@
+// "Create member property 'Foo.foo'" "true"
+
+expect class Foo
+
+fun test(f: Foo) {
+    f.<caret>foo = 1
+}

plugins/kotlin/idea/tests/testData/multiModuleQuickFix/other/createVarInExpectClass/header/header.kt.after

@@ -0,0 +1,9 @@
+// "Create member property 'Foo.foo'" "true"
+
+expect class Foo {
+    var foo: Int
+}
+
+fun test(f: Foo) {
+    f.foo = 1
+}