Add EnumEntries to minimal-stdlib-for-tests

This change allows to revert adding `WITH_STDLIB` directive
to tests which happened at `a9343aeb`.

Co-authored-by: Alexander Udalov <Alexander.Udalov@jetbrains.com>

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

@@ -11,6 +11,9 @@ enum class Enum : Enum<Enum> {
 
   fun valueOf(value: String): Enum /* Synthetic body for ENUM_VALUEOF */
 
+  val entries: EnumEntries<Enum>
+    get(): EnumEntries<Enum> /* Synthetic body for ENUM_ENTRIES */
+
 }
 
 object A {