Add some missing battle arena constants

src/battle_script_commands.c

@@ -6368,7 +6368,10 @@ static void Cmd_various(void)
         break;
     case VARIOUS_ARENA_JUDGMENT_WINDOW:
         i = BattleArena_ShowJudgmentWindow(&gBattleCommunication[0]);
-        if (i == 0)
+        
+        // BattleArena_ShowJudgmentWindow's last state was an intermediate step.
+        // Return without advancing the current instruction so that it will be called again.
+        if (i == ARENA_RESULT_RUNNING)
             return;
 
         gBattleCommunication[1] = i;