Got error while on an Element Call

### Steps to reproduce

1. I was on an Element Call
2. All of a sudden after 30-40 odd minutes, I saw a red alert icon next to the video icon in the room list
3. I was raising my hand at that time, and was unable to un-raise it
4. I was unable to send messages in the room, I got the 'unable to send' error
5. After a while, the raise hand state went away on it's own
6. On ending the call, the error state went away

### Outcome

#### What did you expect?
No error state?

#### What happened instead?

### Operating system

macOS

### Application version

Element Nightly version: 2026011601

### How did you install the app?

_No response_

### Homeserver

matrix.org

### Will you send logs?

Yes

Start by reproducing the failure in an Element Call on macOS with Element Nightly version 2026011601, using the reported sequence of a call lasting 30–40 minutes. Review the promised logs alongside the red room-list alert, stuck raise-hand state, and unable-to-send errors; done means identifying the cause and verifying that these error states recover without ending the call.

Written by the indexing model from the issue text.