Move some constants to common (#11004)

### What problem does this PR solve?

As title.

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

api/db/services/user_service.py

@@ -26,7 +26,7 @@ from api.db.db_models import User, Tenant
 from api.db.services.common_service import CommonService
 from common.misc_utils import get_uuid
 from common.time_utils import current_timestamp, datetime_format
-from api.db import StatusEnum
+from common.constants import StatusEnum
 from rag.settings import MINIO