Add and remove video element flickering on Safar.
This bug only reproduces on Safari.
Chrome, Firefox, and Edge will not flicker.
demo URL: https://flutter-webrtc.github.io/flt-video-element-flicker-demo/
flutter-webrtc/flt-video-element-flicker-demo
Used to reproduce UI flickering when add/remove video elements on Safari
DartMIT