Room-list notification settings look like checkable items but are radio buttons

### Steps to reproduce

1. I want to enable notifications for a room I have previously muted
2. I click on the notification button of the room in the room list
3. I try to uncheck "Mute room", because there is a checkmark next to it

4. Nothing happens

### Outcome

#### What did you expect?

An item with a checkmark behaves like a checkbox: I can click on it to disable

#### What happened instead?

The notification dialog in the room list behaves like a radio-group, but items look checkable.
It should instead visually communicate that only one of the settings is selectable, e.g. with radio buttons.

The notification UI in the room settings uses that already:

### Operating system

Fedora 43

### Browser information

Firefox 149

### URL for webapp

_No response_

### Application version

Version von RRS Element: 1.12.13 Krypto-Version: Rust SDK 0.16.0 (1ac734e), Vodozemac 0.9.0

### Homeserver

Synapse 1.150

### Will you send logs?

No