Trying to enable desktop notifications when browser lack permission disables audible notifications

### Steps to reproduce

1. Open Element in a browser session where the app won't have permission to start desktop notifications, eg. you've already said no to the prompt or in a chrome incognito window.
2. Toggle the desktop notification switch on


### Outcome

#### What did you expect?
Just an error of some kind

#### What happened instead?
The notification switch for audible notifications is also turned off

### Operating system

_No response_

### Browser information

_No response_

### URL for webapp

_No response_

### Application version

_No response_

### Homeserver

_No response_

### Will you send logs?

No

Reproduce the issue in a browser session that cannot obtain desktop-notification permission, then trace the desktop and audible notification settings from the Element web client. Done means a failed desktop-notification enable attempt leaves audible notifications unchanged and reports an error; the issue names no files or tests to start from.

Written by the indexing model from the issue text.