Element always downloads files, the mobile version does not show this behaviour.

### Steps to reproduce

1. Upload a file (video/audio) to a room

### Outcome

#### What did you expect?
Users should see a preview of the file/player and the video should be loaded once the user requests playback.

#### What happened instead?
Element instantly downloads the file.

### Operating system

Windows, Linux, MacOS

### Browser information

Any browser

### URL for webapp

app.element.io

### Application version

Element version: 1.10.10 Olm version: 3.2.8

### Homeserver

stratum0.org

### Will you send logs?

No