fix: Prevent session expiration on commit

Sets 'expire_on_commit' to False when creating a session to
ensure that objects remain accessible after a commit. This
change prevents potential issues with object expiration,
improving reliability when accessing session data after
committing transactions.

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/tasks/remove_app_and_related_data_task.py

@@ -192,7 +192,7 @@ def _delete_app_workflow_runs(tenant_id: str, app_id: str):
 
 def _delete_app_workflow_node_executions(tenant_id: str, app_id: str):
     # Get app's owner
-    with Session(db.engine) as session:
+    with Session(db.engine, expire_on_commit=False) as session:
         stmt = select(Account).where(Account.id == App.owner_id).where(App.id == app_id)
         user = session.scalar(stmt)