closeDialog: Fix scale of dialog for x11 clients in Wayland sessions
We missed this case in b6e57a5a, xwayland clients obviously don't use MetaWindowWayland and thus they don't apply the double scaling that commit was meant to fix.
We missed this case in b6e57a5a, xwayland clients obviously don't use MetaWindowWayland and thus they don't apply the double scaling that commit was meant to fix.