Upgrade eslint related packages
Fix new errors

In the case when the user selects a new video device then goes to Virtual Background without saving first, use the newly selected device for the virtual background preview instead of the saved one

Upgrade typescript related packages
Fix new errors and warnings

Remove unnecessary @ts-ignores
Use @ts-expect-error instead of @ts-ignore for external dependencies

When the toolbox is hidden and due to a ReactFocusLock instance the
focus is returned to the toolbox the whole page scrolls to the toolbox
which is positioned outside of the viewport in the bottom.
Then when the animation for displaying the toolbox is started the
scenario looks like the large video is jumping.
Now we don't return the focus from ReactFocusLock to elements which are
not part of the viewport.

* ref(conference) Simplify track creation.
If gUM fails, we do not have to retry gUM with mic only and camera only constraints. gUM has come a long way and this is not needed anymore.

* ref(conference) Filter tracks that are added to conference.

* squash: Address review comments

* fix(prejoin): Display the exact gUM error in prejoin.

* squash: Address review comments

In case a visitor is promoted to main room and want to join an empty breakout room we want to send conference iq to jicofo.

* feat: Audio output settings in visitor mode.

* squash: Fix lint errors.

The usecase is breakout rooms when main room is empty, but then one of the participants come back.

Remove some @ts-ignores

* fix: multiselect duplicates

* set multiselect height to 200px

When gUM resolves after the user has joined as a visitor, skip adding the local tracks to the conference.

feat(invite/native): add people functionality fixes

Remove @atlaskit and styled-components
Upgrade @emotion and @mui packages
Move @types packages to devDeps

* feat: Adds an option to disable iframeAPI.

* squash: Use utility.

* fix(mobile) Do not disableAudioLevels on RN since it uses feature detection now.
Local and remote audio levels will automatically be disabled on RN since receiver stats and local audio stats are not supported there.

* fix: leave the conference after it is destroyed

* add timeout for leave conference

When we receive the error from a visitor node, we need to restore the previous configuration, reconnect to the main prosody and be ready to try to rejoin again (from prejoin screen).

Last-n doesn't need to be updated when participants join/leave the conference or for other layout changes.

Fix some errors. Remove @ts-ignores
Convert some files to TS
Remove some eslint-disables

* feat(polls): fixed scroll inside components and added pointerEvents auto for question and answer inputs

Move ListItem to base/ui

Fix imports
Convert some files to TS

Fix imports