[wayland] Implement resize_x/resize_y constraint adjustment
Summary:
Since we send the initial configure event after placing xdg-popups, we
can finally implement resize_x and resize_y constraint adjustments.
Reviewers: KWin, davidedmundson
Reviewed By: KWin, davidedmundson
Subscribers: davidedmundson, kwin
Tags: KWin
Differential Revision: https://phabricator.kde.org/D27049