Override completion in expect class should behave differently

Caret placement is at the end of new fun/property

#KT-25313 Fixed

idea/idea-completion/testData/handlers/basic/override/ExpectClassValOverride.kt

@@ -0,0 +1,8 @@
+interface Interface {
+    var field: Int
+}
+
+expect class SClass : Interface {
+    override<caret>
+}
+// ELEMENT_TEXT: "override var field: Int"