fix: current_state has been changed to a computed property

stateflow/tests/test_services.py

@@ -48,9 +48,9 @@ class StateFlowServicesTestCase(TestCase):
         self.assertEqual(current_state.name, self.state1.name)
         self.assertEqual(self.business_object.get_progress_percentage(), 0.0)
         
-        # 整体状态应该是 not_started
+        # 整体状态应该是 in_progress（废除了 not_started）
         status = services.get_overall_status(self.business_object)
-        self.assertEqual(status, 'not_started')
+        self.assertEqual(status, 'in_progress')
 
     def test_advance_to_next_state(self):
         """测试推进到下一个状态"""