view: use seat_consider_warp_to_focus in view_unmap
view: use seat_consider_warp_to_focus in view_unmap

The view_unmap function contained an open coded version of
seat_consider_warp_to_focus, replace it with a call to the function.

1ace/sway,SirCmpwn/sway,ascent12/sway,1ace/sway,ascent12/sway,ascent12/sway,1ace/sway