* feat(visitors): Handling of live conference and queue service.

* squash: Small refactor mobile code.

* squash: Drop debug log.

* chore(deps) lib-jitsi-meet@latest

https://github.com/jitsi/lib-jitsi-meet/compare/v1836.0.0+d05325f3...v1839.0.0+ea523fc6

* squash: Adds a count function.

* squash: Drop debug print.

* squash: Skip if queueService is not enabled.

* squash: Avoids double subscribing for visitorsWaiting.

* squash: Fixes lint error.

* squash: Fixes showing dialog.

* feat: Returns an error on join request with no display name.

When someone tries to join a room with lobby enabled and display name is not set returns an error.

* squash: Fixes handling DISPLAY_NAME_REQUIRED with preJoin disabled.

* squash: Fixes mobile build.

* squash: Move isDisplayNameRequired redux state in lobby and introduces isDisplayNameRequiredError.

* squash: Drops unused isDisplayNameRequired.

This was used on showing prejoin when connection was established on showing prejoin. We no longer establish it at that time, so it is not possible to hit it and act on it.