Add flag to ignore check folder modtime for rclone snapshot

app/modules/filemanager/storages/__init__.py

@@ -13,6 +13,7 @@ class StorageBase(metaclass=ABCMeta):
     """
     schema = None
     transtype = {}
+    snapshot_check_folder_modtime = True
 
     def __init__(self):
         self.storagehelper = StorageHelper()
@@ -214,7 +215,8 @@ class StorageBase(metaclass=ABCMeta):
                         return
 
                     # 增量检查：如果目录修改时间早于上次快照，跳过
-                    if (last_snapshot_time and
+                    if (self.snapshot_check_folder_modtime and
+                            last_snapshot_time and
                             _fileitm.modify_time and
                             _fileitm.modify_time <= last_snapshot_time):
                         return