KT-18158 Expand selection should select the comment after expression getter on the same line (#1122)

* Expand selection should select the comment after expression getter on the same line #KT-18158 Fixed

* Fixed expand selection behavior for the declaration with comment #KT-18158

* Remove redundant code #KT-18158

idea/testData/intentions/declarations/convertMemberToExtension/abstract.kt.after

@@ -3,5 +3,5 @@ abstract class Owner {
 }
 
 fun Owner.f() {
-    <caret><selection>TODO("not implemented")</selection> //To change body of created functions use File | Settings | File Templates.
+    <caret><selection>TODO("not implemented") //To change body of created functions use File | Settings | File Templates.</selection>
 }