Rewrite QuickFixMultiModuleTest to be generated

Adjust test data
Drop 'overload' test data since it was never run before

idea/testData/multiModuleQuickFix/withTest/a_jvm_test/test/testHelper.kt

@@ -0,0 +1,4 @@
+// testHelper: to be implemented
+// TEST
+
+package test

idea/testData/multiModuleQuickFix/withTest/a_jvm_test/test/testHelper.kt.after

@@ -0,0 +1,6 @@
+// testHelper: to be implemented
+// TEST
+
+package test
+
+actual fun testHelper() {}