chore: optimize knowledge ID retrieval in base_search_knowledge_node

--bug=1062936 --user=刘瑞斌 【应用】应用访问限制开启登录认证，登录后对话，知识库引用文档标签检索节点的输出参数报错 https://www.tapd.cn/62980211/s/1789493

Author: liuruibin

apps/application/flow/step_node/search_knowledge_node/impl/base_search_knowledge_node.py

@@ -85,11 +85,11 @@ def execute(self, knowledge_id_list, knowledge_setting, question, show_knowledge
                 knowledge_id_list = self.get_reference_content(search_scope_reference)
             else:  # 文档
                 document_id_list = self.get_reference_content(search_scope_reference)
-                knowledge_id_list = QuerySet(Document).filter(
+                knowledge_id_list = list(QuerySet(Document).filter(
                     id__in=document_id_list
                 ).values_list(
                     'knowledge_id', flat=True
-                ).distinct()
+                ).distinct())
 
         get_knowledge_list_of_authorized = DatabaseModelManage.get_model('get_knowledge_list_of_authorized')
         chat_user_type = self.workflow_manage.get_body().get('chat_user_type')
@@ -107,7 +107,8 @@ def execute(self, knowledge_id_list, knowledge_setting, question, show_knowledge
                                     QuerySet(Document).filter(
                                         knowledge_id__in=knowledge_id_list,
                                         is_active=False)]
-        embedding_list = vector.query(question, embedding_value, knowledge_id_list, document_id_list, exclude_document_id_list,
+        embedding_list = vector.query(question, embedding_value, knowledge_id_list, document_id_list,
+                                      exclude_document_id_list,
                                       exclude_paragraph_id_list, True, knowledge_setting.get('top_n'),
                                       knowledge_setting.get('similarity'),
                                       SearchMode(knowledge_setting.get('search_mode')))