When you have multiple accounts and switch to another account on an unreachable server, the files list doesn't change

### ⚠️ Before posting ⚠️

- [X] This is a **bug**, not a question or an enhancement.
- [X] I've [searched for similar issues](https://github.com/nextcloud/android/issues) and didn't find a duplicate.
- [X] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
- [X] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Steps to reproduce

Set up accounts on server A and server B.

Switch to server A.

Shut down server B.

Switch to server B.

### Expected behaviour

See files of server B, or an empty list.

### Actual behaviour

An error message "server not available" but the list of files is from server A.

The account selection has "server B" selected, even though the list is still from server A.

### Android version

irrelevant

### Device brand and model

irrelevant

### Stock or custom OS?

Stock

### Nextcloud android app version

latest

### Nextcloud server version

latest

### Using a reverse proxy?

No

### Android logs

_No response_

### Server error logs

_No response_

### Additional information

_No response_