[IR] Normalize temp var names in Kotlin-like dump

^KT-61983 Fixed

compiler/testData/ir/irText/expressions/forWithImplicitReceivers.kt.txt

@@ -32,11 +32,11 @@ interface IReceiver {
 
   operator fun IntCell.next(): Int {
     return { // BLOCK
-      val tmp0_this: IntCell = <this>
+      val tmp_0: IntCell = <this>
       { // BLOCK
-        val tmp1: Int = tmp0_this.<get-value>()
-        tmp0_this.<set-value>(<set-?> = tmp1.dec())
-        tmp1
+        val tmp_1: Int = tmp_0.<get-value>()
+        tmp_0.<set-value>(<set-?> = tmp_1.dec())
+        tmp_1
       }
     }
   }
@@ -45,9 +45,9 @@ interface IReceiver {
 
 fun IReceiver.test() {
   { // BLOCK
-    val tmp0_iterator: IntCell = (<this>, FiveTimes).iterator()
-    while ((<this>, tmp0_iterator).hasNext()) { // BLOCK
-      val i: Int = (<this>, tmp0_iterator).next()
+    val tmp_2: IntCell = (<this>, FiveTimes).iterator()
+    while ((<this>, tmp_2).hasNext()) { // BLOCK
+      val i: Int = (<this>, tmp_2).next()
       { // BLOCK
         println(message = i)
       }