1:1 call dropped out multiple times during one attempted call

### Steps to reproduce

1. Have a 1:1 voice call
2. App crashes
3. Start call again
4. App crashes

### Outcome

#### What did you expect?
Phone call of a similar quality to a mobile call

#### What happened instead?
Call drops out repeatedly during one attempted call because the app keeps crashing

The crashes were on the 5th August at ~23:40, ~23:53 and 6th August ~00:05.

### Your phone model

_No response_

### Operating system version

Android 11

### Application version and app store

1.4.31 playstore

### Homeserver

matrix.org

### Will you send logs?

Yes

### Are you willing to provide a PR?

No