[IR] update testdata: unify representation for error nodes

compiler/testData/ir/irText/expressions/whenWithSubjectVariable.fir.kt.txt

@@ -9,9 +9,10 @@ fun test(): Int {
       EQEQ(arg0 = y, arg1 = 42) -> 1
       y is String -> y /*as String */.<get-length>()
       y !is Int -> 2
-      error("") /* ERROR CALL */y;  -> 3
-      error("") /* ERROR CALL */y; .not() -> 4
+      error("") /* ErrorCallExpression */y;  -> 3
+      error("") /* ErrorCallExpression */y; .not() -> 4
       else -> -1
     }
   }
 }
+