enableThumbnailReordering flag (enabled by default) will be used to check if the thumbnails needs to be reodred in the UI.

* feat(Filmstrip): Reorder the visible participants in the filmstrip.
The participants are ordered alphabetically and the endpoints with screenshares, shared-videos and dominant speakers (in that order) are bumped to the top of the list. The local participant is also moved to the top left corner as opposed to the bottom right corner.

* squash: Implement review comments.

* squash: store alphabetically sorted list in redux and move shared videos to top.

* squash: Use the DEFAULT_REMOTE_DISPLAY_NAME from interfaceConfig for users without a display name.

* fix(participants): Change from array to Map

* fix(unload): optimise

* feat: Introduces new states for e2ee feature.

Stores everyoneSupportsE2EE and everyoneEnabledE2EE to minimize looping through participants list.

squash: Uses participants map and go over the elements only once.

* feat: Optimizes isEveryoneModerator to do less frequent checks in all participants.

* fix: Drops deep equal from participants pane and uses the map.

* fix(SharedVideo): isVideoPlaying

* fix(participants): Optimise isEveryoneModerator

* fix(e2e): Optimise everyoneEnabledE2EE

* fix: JS errors.

* ref(participants): remove getParticipants

* fix(participants): Prepare for PR.

* fix: Changes participants pane to be component.

The functional component was always rendered:
`prev props: {} !== {} :next props`.

* feat: Optimization to skip participants list on pane closed.

* fix: The participants list shows and the local participant.

* fix: Fix wrong action name for av-moderation.

* fix: Minimizes the number of render calls of av moderation notification.

* fix: Fix iterating over remote participants.

* fix: Fixes lint error.

* fix: Reflects participant updates for av-moderation.

* fix(ParticipantPane): to work with IDs.

* fix(av-moderation): on PARTCIPANT_UPDATE

* fix(ParticipantPane): close delay.

* fix: address code review comments

* fix(API): mute-everyone

* fix: bugs

* fix(Thumbnail): on mobile.

* fix(ParticipantPane): Close context menu on click.

* fix: Handles few error when local participant is undefined.

* feat: Hides AV moderation if not supported.

* fix: Show mute all video.

* fix: Fixes updating participant for av moderation.

Co-authored-by: damencho <damencho@jitsi.org>

* Unify chat open/close size changes and move them to redux.
* Fix responsive columns not accounting for chat.

Due to how the filmstrip size if computed I don't think there is a good way to
animate the change in size, so just ignore the toolbar, it will be hidden soon
enough.

- Lower the inter-tile margin to 2px
- Remove the 100px top/bottom margin when the toolbar is hidden

* ref(Filmstrip): Optimize resizes.

* fix(thumbnails): resize.

* fix(thumbnails): Issue with height 0, width 0.

* doc(Filmstrip): Improve JSDoc.