Allow "create actual" for function even if partially-compatible exists

So #KT-20163 Fixed

idea/testData/multiModuleQuickFix/overload/header/header.kt

@@ -0,0 +1,5 @@
+// "Create actual function for platform JVM" "true"
+
+expect fun <caret>foo(arg: Int): String
+
+expect fun foo(arg: String): String

idea/testData/multiModuleQuickFix/overload/header/header.kt.after

@@ -0,0 +1,5 @@
+// "Create actual function for platform JVM" "true"
+
+expect fun foo(arg: Int): String
+
+expect fun foo(arg: String): String

idea/testData/multiModuleQuickFix/overload/jvm/foo.kt

@@ -0,0 +1,3 @@
+// foo: to be implemented
+
+actual fun foo(arg: String) = arg

idea/testData/multiModuleQuickFix/overload/jvm/foo.kt.after

@@ -0,0 +1,7 @@
+// foo: to be implemented
+
+actual fun foo(arg: String) = arg
+
+actual fun foo(arg: Int): String {
+    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+}