During video call: aspect ratio of own image is wrong

### Steps to reproduce

1. Switch your phone to landscape mode.
2. Start video call with someone having Element Desktop on a landscape mode screen.

### Outcome

#### What did you expect?
The image of myself displayed during the call should show everything of the video stream of me which is sent to the call partner.

#### What happened instead?
The image of myself is in portrait shape. That means at least some left and right part of the video is cut off. Something is visible to the call partner which might be hidden on my own screen.

### Your phone model

Samsung Tablet

### Operating system version

Android 10

### Application version and app store

1.3.9

### Homeserver

_No response_

### Will you send logs?

No