[Bug] there isn't full screen support for youtube videos.

Describe the bug

hello everyone!

I use DuckDuckGo Android for my mobile phone. I simply love it. However there is one annoying issue I encounter every single time I browse youtube.

How to Reproduce

How to Reproduce *
Steps to reproduce the behaviour

1. Go to 'youtube.com' or 'm.youtube.com'
2. Click on any video to watch
3. try to enter full screen by clicking box icon inside video placeholder
4. See error (we indeed enter full-screen mode but it isn't the expected behaviour of full-screen. 
   what I mean here is in other browsers like chrome automatically switches to landscape mode, 
   which isn't the case with our browser)

Expected behavior

Expected behaviour *

While entering full-screen mode the video shall automatically rotate to landscape mode. which is default behaviour of the website.

Environment

- DDG App Version: Latest and probably all previous versions
- Device: Redmi S2 and assuming we could reproduce this on all devices.
- OS: Android 12 and assuming we could reproduce this on all OS.

Start by reproducing the YouTube fullscreen flow on Android and trace the app's handling of fullscreen video and orientation changes. Done means entering fullscreen from youtube.com or m.youtube.com automatically rotates the device to landscape, matching the expected browser behavior.