Delay when switching from screenshare to camera

Steps to reproduce

• Can you reproduce the bug: at will

• Steps:

  1. Start video call

  2. Switch to screenshare

  3. Switch back to camera video

There is a significant delay when switching from a screenshare to camera video.

Same/similar issue if you make an audio-only call (Android -> Desktop) and then add the shared screen or a camera.

(and the other direction: video call -> disable camera -> enable screenshare -> enable camera again/ switch camera)

Maybe related? #1520 #1519

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