Describe the bug
后台任务转移存储策略，目标存储策略始终展示 unknown
指的是后台管理面板中的后台任务tab

To Reproduce
Steps to reproduce the behavior:

1. 在前台转移存储策略
2. 前台可以正确展示转移的目标存储策略的
3. 后台始终展示 unknown

Expected behavior
后台应该和前台一样，正确展示目标存储策略

Screenshots
如下图是后台

如下图为前台

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
服务端版本：4.11.1pro