Fixed KT-4431 Override/implement val: generate getter instead of initializer

#KT-4431 Fixed

idea/testData/codeInsight/overrideImplement/overrideRespectCaretPosition.kt.after

@@ -6,7 +6,9 @@ open class A() {
 class C : A() {
     val constant = 42
     // Some comment
-    override val bar: Int = <selection><caret>0</selection>
+    override val bar: Int
+        get() = <selection><caret>0</selection>
+
     override fun equals(other: Any?): Boolean {
         return super<A>.equals(other)
     }