wlr-layer-shell-v1: destroy xdg popups on unmap
wlr-layer-shell-v1: destroy xdg popups on unmap

This destroys the xdg popups associated with a layer surface when the
layer surface is unmapped. It does not make sense to keep the popups
open when unmapped.

swaywm/wlroots,swaywm/wlroots,ascent12/wlroots,ascent12/wlroots,SirCmpwn/wlroots