* Fix device selection in pre-join screen for Element Call video rooms
As per https://github.com/vector-im/element-call/pull/609
* Update unit test
* Lint
* Hold a media stream while we enumerate device so we can do so reliably.
This means we can remove the device fallback labels.
* i18n
* Remove unnecessary useState
* Fix fetching video devices when video muted
* Actually fix preview stream code
* Fix unit test now fallback is no longer a thing
* Test changing devices