refactor: update chat record processing to include chat count updates

Author: wxg0103

apps/application/serializers/application_chat_record.py

@@ -304,6 +304,8 @@ def post_improve(self, instance: Dict):
         # 批量保存聊天记录
         ChatRecord.objects.bulk_update(chat_record_list, ['improve_paragraph_id_list'])
         update_document_char_length(document_id)
+        for chat_id in chat_ids:
+            ChatCountSerializer(data={'chat_id': chat_id}).update_chat()
 
         return paragraph_ids, knowledge_id