Fix autohide behaviour after dragging a panel
Summary:
Currently, when dragging a window from the panel to move it, it breaks the autohide behaviour of active docks/panels. This change imitates a release event on X11 to circumvent these problems.
BUG: 403104
Reviewers: mvourlakos
Reviewed By: mvourlakos
Subscribers: plasma-devel
Tags: Latte Dock, Plasma
Differential Revision: https://phabricator.kde.org/D18194