Internal windows cannot be minimized
Summary:
This change ensures that the DebugConsole does not have a minimize
button.
BUG: 372000
FIXED-IN: 5.8.4
Reviewers: KWin, Plasma on Wayland, broulik
Subscribers: plasma-devel, kwin
Tags: Plasma on Wayland, KWin
Differential Revision: https://phabricator.kde.org/D3244