WL: add cmd_bring_to_front to Static in case it is normal window
WL: add cmd_bring_to_front to Static in case it is normal window

Currently Static inherits cmd_bring_to_front from Window, and changes Z
position using Core.mapped_windows. However, if it is a layer surface
then it is never there, resulting in exception because it cannot be
removed from the list it ain't in. It should only do this if it is not a
layer surface window, instead being an xdg surface window.

ramnes/qtile,qtile/qtile,qtile/qtile,ramnes/qtile