KT-5292 Expand selection should have kdoc + method as a stop point

KT-3947 Extend selection works badly with comment

 #KT-5292 Fixed
 #KT-3947 Fixed

idea/testData/wordSelection/Statements/9.kt

@@ -10,8 +10,8 @@ fun main(args : Array<String>) {
     }
 }
 
-fun foo() : Unit <selection>{
-    println() {
+fun foo() : Unit {
+<selection>    println() {
         println()
 
 
@@ -21,4 +21,4 @@ fun foo() : Unit <selection>{
 
     println(array(1, 2, 3))
     println()
-}</selection>
+</selection>}