Aligh test data with JDK 15 reflection output

compiler/testData/codegen/box/reflection/builtins/enumNameOrdinal.kt

@@ -3,11 +3,12 @@
 // WITH_REFLECT
 
 import kotlin.test.assertEquals
+import kotlin.test.assertTrue
 
 enum class E { X, Y, Z }
 
 fun box(): String {
-    assertEquals(11, E::class.members.size)
+    assertTrue(E::class.members.size in 11..12, "" + E::class.members.size)
     assertEquals("Y", E::name.call(E.Y))
     assertEquals(2, E::ordinal.call(E.Z))
     return "OK"