* feat(welcome-page): be able to open settings dialog
- Create a getter for getting a settings tab's props so the device
selection tab can get updated available devices.
- Be able to call a function from a tab after it has mounted. This is
used for device selection to essentially call enumerateDevices on
the welcome page so the device selectors are populated.
- Remove event UIEvents.AUDIO_OUTPUT_DEVICE_CHANGED. Instead directly call
setAudioOutputDeviceId where possible.
- Fix initialization of the audioOutputDeviceId in settings by defaulting
the audio output device to the one set in settings.
* squash: updateAvailableDevices -> getAvailableDevices, add comment for propsUpdateFunction
cac8888b37