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

^KT-61983 Fixed

compiler/testData/ir/irText/classes/dataClasses/lambdaInDataClassDefaultParameter.kt.txt

@@ -35,9 +35,9 @@ data class A {
     when {
       other !is A -> return false
     }
-    val tmp0_other_with_cast: A = other as A
+    val tmp_0: A = other as A
     when {
-      EQEQ(arg0 = <this>.#runA, arg1 = tmp0_other_with_cast.#runA).not() -> return false
+      EQEQ(arg0 = <this>.#runA, arg1 = tmp_0.#runA).not() -> return false
     }
     return true
   }
@@ -89,9 +89,9 @@ data class B {
     when {
       other !is B -> return false
     }
-    val tmp0_other_with_cast: B = other as B
+    val tmp_1: B = other as B
     when {
-      EQEQ(arg0 = <this>.#x, arg1 = tmp0_other_with_cast.#x).not() -> return false
+      EQEQ(arg0 = <this>.#x, arg1 = tmp_1.#x).not() -> return false
     }
     return true
   }