Call ringing not disableable

### Steps to reproduce

1. Where are you starting? What can you see?
- I can see the incoming call toast on the top left
2. What do you click?
3. More steps…
- I receive a call. Here are my notification settings (I have them disabled on the device)

### Outcome

#### What did you expect?
Does not ring or make a sound when notifications are disabled
#### What happened instead?
It rings

### Operating system

Fedora

### Application version

1.12.25

### How did you install the app?

Fedora Flathub Selection

### Homeserver

mat.meowc.at (personal server): using ESS

### Will you send logs?

No

Start by reproducing the incoming call on Fedora with device notifications disabled, using the reported Element version and Flathub installation. Trace the incoming-call notification and ringing behavior from the frontend entry point, then verify that disabled notifications prevent both the toast and sound without breaking call handling.

Written by the indexing model from the issue text.