Screen sharing functionality splits the view as another user

[Akankshabhasin]

Issue: The screen sharing functionality splits the meeting as another user.

Description: As of now, turning screen sharing on adds the shared screen as another user. If the participants are shown in the grid view, the screen is visible only as another small box.

Expected/Desired Behaviour: Fix this to allow proper screen sharing. Participants might still be visible in the meeting.
The view changes automatically to the Highlight view, and pins the shared screen. The other participants are seen in a single column of up to 4 rows, i.e. <= 4 cells, on the right side of the pinned video. If there are more than 4 participants (5 total including shared screen), then there should be a button to show the next 4 participants.
Notes: As of now, this view shift can be done manually by a participant not sharing their screen, but we want this to be the default to ensure a better user experience.