if you view an image in the chat during a conversation on speaker (handsfree). Handsfree turns off.

### Steps to reproduce

1. Open element and start a voice call. Press on the speaker icon ( Handsfree )
2. Go to the chat. And open a picture in the chat.
3. Handsfree is off!

### What happened?

### What did you expect?
Hands-free must stay on

### What happened?
When I'm on a hands-free call. and I open a picture. in the chat. I don't want handsfree turned off

Tested on: Iphone 12pro, Ipad 11 pro 2021, iphone se 2020.

### Your phone model

Iphone 12pro, Ipad 11 pro 2021, iphone se 2020

### Operating system version

ios 14.7.1, ios 15.01

### Application version

1.6.1

### Homeserver

matrix.org

### Have you submitted a rageshake?

No

No source file, test, or entry point is named. Start by reproducing the issue on iOS: begin a voice call, enable Handsfree, open a picture in the chat, and trace the audio-session or presentation change that disables it. Done means Handsfree remains enabled while the picture is open.

Written by the indexing model from the issue text.