[UI] Notifications for Backup are Labeled as Bucket.

### problem

For some reason, while I was doing Backup operations, the UI was telling me Bucket.

I hope it is just a labeling issue and not a logic issue.

ACS 4.22.0.1

### versions

The versions of ACS, hypervisors, storage, network etc..

### The steps to reproduce the bug

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### What to do about it?

_No response_

在 ACS 4.22.0.1 中重现备份操作，并将附加屏幕截图中显示的 UI 标签与正在执行的操作进行比较。确认通知显示的是“Backup”而不是“Bucket”，并验证底层操作不受影响。

由索引模型根据 Issue 内容生成。