fix: ensure workflow run persistence before refresh

Adds the workflow run object to the database session to guarantee it is persisted prior to refreshing its state. This change resolves potential issues with data consistency and integrity when the workflow run is accessed after operations. References issue #123 for more context.

api/core/app/task_pipeline/workflow_cycle_manage.py

@@ -217,6 +217,7 @@ def _handle_workflow_run_failed(
             ).total_seconds()
             db.session.commit()
 
+        db.session.add(workflow_run)
         db.session.refresh(workflow_run)
         db.session.close()