Smart completion to use super type for override if no explicit type specified

idea/idea-completion/testData/smart/ImplicitlyTypedOverrideFunBody.kt

@@ -0,0 +1,13 @@
+abstract class Base {
+    abstract fun foo(): Int
+}
+
+class Derived : Base() {
+    override fun foo() = <caret>
+}
+
+fun getInt(): Int = 0
+fun getString(): String = ""
+
+// EXIST: getInt
+// ABSENT: getString

idea/idea-completion/testData/smart/ImplicitlyTypedOverrideValInitializer.kt

@@ -0,0 +1,13 @@
+abstract class Base {
+    abstract val foo: Int
+}
+
+class Derived : Base() {
+    override val foo = <caret>
+}
+
+fun getInt(): Int = 0
+fun getString(): String = ""
+
+// EXIST: getInt
+// ABSENT: getString