Statusbar message freezes dragging on windows
Specialy on windows but all OS are affected in much lower way,
dragging a element become blocked. this MR allow to fix this issue.
The main issue in windows is we using wrap on label and is bad used
because warping text must be non ellipsed.
Also removing line height for windows improve performance and looks correct.
Also by a Mike sugestion we add a scrolled window with external scroll instead manipulate Pango markup.
The last fix applyed is set message into a idle add with auto connetion as Mike also temll me
allow not show whole message stack one by one allowing cancel it when a new one rise.
With this MR in windows speed is similar dragging with and without status bar.
https://discourse.gnome.org/t/windows-speedup-pango-markup-related/20184