bugfix uploadfile&app update_time

backend/app/db/cruddb/dbapp.py

@@ -1,6 +1,7 @@
 from datetime import datetime
 from fastapi import HTTPException, status
 from sqlalchemy.orm import Session
+from sqlalchemy.orm.attributes import flag_modified
 from sqlalchemy import select,and_
 import typing as t
 
@@ -202,6 +203,7 @@ class dbapp(crudbase):
         db_app = self.get_app(db, domainurl, flow.appid)
         if db_app and db_app.version > 0:
             db_app.is_saved = True
+            flag_modified(db_app, 'is_saved')
         db.add(db_app)
         db.commit()
         db.refresh(db_flow)