- Freedesktop Desktop Screenshare port is now used when Wayland is detected (needs
`xdg-desktop-portal` with the implementation corresponding to desktop environment).
- Add a binding feature to feedback state to application (e.g. if desktop sharing is
cancelled from desktop environment, or at portal's permission request level).
- fix misnaming of video source (was wrongly named `camera` instead of `video`).
- fix desktop sharing pad selection in `input-selector` when it has been added once, then
removed, then added again.
rel 434