refector: 检验撤回根据count_notok进行update_mb

apps/inm/views.py

@@ -266,9 +266,10 @@ class MIOItemViewSet(ListModelMixin, BulkCreateModelMixin, BulkDestroyModelMixin
         mio: MIO = ins.mio
         if ins.test_date is None:
             raise ParseError('该明细还未检验')
-        InmService.update_mb_item(ins, 1, 'count_notok', mio.type, mio.belong_dept)
-        ins.test_date = None
-        ins.save()
+        if ins.count_notok > 0:
+            InmService.update_mb_item(ins, 1, 'count_notok', mio.type, mio.belong_dept)
+            ins.test_date = None
+            ins.save()
         return Response()
 
     @action(methods=['post'], detail=True, perms_map={'post': 'mioitem.test'}, serializer_class=MIOItemPurInTestSerializer)