refactor: Optimize row permission logic

Author: XiaJunjie2020

backend/apps/datasource/crud/permission.py

@@ -41,7 +41,8 @@ def get_row_permission_filters(session: SessionDep, current_user: CurrentUser, d
                     if flag:
                         res.append(transRecord2DTO(session, permission))
             where_str = transFilterTree(session, res, ds)
-            filters.append({"table": table.table_name, "filter": where_str})
+            if where_str:
+                filters.append({"table": table.table_name, "filter": where_str})
     return filters