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