fix: improve maintenance and synchronize live conversations

backend/tests/services/test_workflow_node.py

@@ -16,7 +16,7 @@ limitations under the License.
 
 import pytest
 from unittest.mock import Mock, MagicMock, patch
-from uuid import uuid4, UUID
+from uuid import uuid4
 from datetime import datetime
 
 from app.services.workflow_node import WorkflowNodeService, sanitize_utf8_text
@@ -587,7 +587,7 @@ class TestWorkflowNodeService:
             }
         ]
 
-        result = workflow_node_service.replace_workflow_nodes_and_connections(
+        workflow_node_service.replace_workflow_nodes_and_connections(
             test_workflow.id, nodes_data, [], test_organization_id
         )
 
@@ -635,7 +635,7 @@ class TestWorkflowNodeService:
             "description": "Updated\udcac description\udd16"
         }
 
-        result = workflow_node_service.update_single_node(
+        workflow_node_service.update_single_node(
             test_workflow_node.workflow_id,
             test_workflow_node.id,
             update_data,