Improved logic of finding conflicts for refactoring actions

idea/testData/refactoring/introduceVariable/NoExplicitReceivers.kt.after

@@ -1,9 +1,9 @@
 // WITH_RUNTIME
 fun main(args: Array<String>) {
     with(A()) {
-        val prop = prop
-        println(prop)
-        println(prop)
+        val prop1 = prop
+        println(prop1)
+        println(prop1)
     }
 }