Wayland: manage outputs without id mapping
Summary:
Instead of having a separate mapping from KWayland ids to KScreen ids for
output removal connect to the removed signal.
For that create the output device through the Registry instead of binding.
Test Plan: Manually plugged in and removed output in Wayland session.
Reviewers: Plasma
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D23004