Show video room specific dialog also for "RoomType.UnstableCall"

[menturion]

Your use case

Show video room specific dialog also for RoomType.UnstableCall by changing line ...

https://github.com/matrix-org/matrix-react-sdk/blob/fa7486e415bc29ef49ce8b78d569bad186b6d1ca/src/components/views/dialogs/CreateRoomDialog.tsx#L266

to

const isVideoRoom = this.props.type === RoomType.ElementVideo || this.props.type === RoomType.UnstableCall;