KT-12299 Completion: incorrect priority of property foo over method getFoo in Kotlin-only code

#KT-12299 Fixed

idea/idea-completion/testData/weighers/smart/StaticMemberAndPrefix.kt

@@ -0,0 +1,10 @@
+interface Z {
+    companion object {
+        val instance: Z? = null
+    }
+}
+
+fun foo(): Z? = Z<caret>
+
+// ORDER: instance
+// ORDER: object