--This new approach paints all docks and panels during
starup offscreen. This way especially under x11 not a lot of
visual glitches are appearing all over the place.
After startup time has ended docks and panels are
moved at their original and valid placement and slide in
animations are triggered.
--fix how CanBeAboveFullscreen windows option can be
enabled/disabled properly and work correctly
--fix how Blur is handled for docks and panels that
can be AboveFullScreenWindows under X11. Blur is now
working correctly for them but of course GtkFrameExtents
do not work at all because they are intended to work
based on KWin implementation.
BUG:443536
--this way during startup a big thickness is
provided in order for slide-in during startup
to play nicely and give the time to view
its proper thicknesses
--inEditMode is now updated directly from
containment()->inUserConfiguring()
--add again hiding blockers when View gets
into edit mode. That was lost during last commits
because it was part of Visual qml code that
has been moved to another window.
--when hidden configuration windows are deleted memory
consumption is improved and provides much lower values
--when hidden configuration windows are not deleted
memory consumption increases but their responsiveness
for hiding/showing is instantly
--View recreation path was broken from new implementation
for Latte::Interfaces that pass objects to containment
interface. This is now fixed and Interfaces::View object is updated
and broadcasted correctly when changed
--when GtkFrameExtents are zeroed for behaveAsPlasmaPanels
then it is better to recreate the view to avoid freezes and
hidings of the view because of compositor strange behavior
--use a single slot when View triggers its workarounds
for the kwin issue that kwin hides panels when an activity
stops. In such case the view shadows are also redrawn.