[Tests] More conservative stableOrdered dump

Order of enum entries and fields matters, we can't sort them too.

^KT-65460

compiler/testData/ir/irText/expressions/objectAsCallable.sig.kt.txt

@@ -32,17 +32,17 @@ val test2: Int
 //   Mangled name: En
 //   Public signature: /En|null[0]
 enum class En : Enum<En> {
+  // CHECK:
+  //   Mangled name: En.X
+  //   Public signature: /En.X|null[0]
+  X
+
   // CHECK:
   //   Mangled name: En#<init>(){}
   //   Public signature: /En.<init>|-5645683436151566731[0]
   //   Public signature debug description: <init>(){}
   private constructor() /* primary */
 
-  // CHECK:
-  //   Mangled name: En.X
-  //   Public signature: /En.X|null[0]
-  X
-
   // CHECK JVM_IR:
   //   Mangled name: En#valueOf#static(kotlin.String){}En
   //   Public signature: /En.valueOf|-1047188124757226812[0]