fix: current_state has been changed to a computed property

printing/test_plate_order.py

@@ -137,7 +137,7 @@ class PlateOrderModelTestCase(TestCase):
             customer=self.customer,
         )
         
-        self.assertEqual(plate_order.status, '未开始')
+        self.assertEqual(plate_order.status, '')  # 废除"未开始"，显示空字符串
         self.assertFalse(plate_order.is_completed)
         self.assertFalse(plate_order.has_started)  # 因为没有 business_object
         self.assertEqual(plate_order.progress_percentage, 0.0)