clients: If available, prefer top level surfaces for move or rotate
clients: If available, prefer top level surfaces for move or rotate

This stops us from rotating or moving pop-up menus by instead rotating
their parents.

This is easiest to see using a multi-seat configuration.

Signed-off-by: Derek Foreman <2f97e0f0bc172406aab8ccd42dab54c95bab8759@osg.samsung.com>
Reviewed-by: Bryce Harrington <bdb14cfc1ab8d24e13de84adc40b41ae60c13bd1@osg.samsung.com>

krezovic/weston,udoprog/weston,Gnurou/weston,udoprog/weston,Gnurou/weston,Fantu/compositor-spice,sir-murray/weston,kwm81/weston,giucam/weston,kwm81/weston,Fantu/compositor-spice,sir-murray/weston,Fantu/compositor-spice,giucam/weston,Tarnyko/weston-xdg_surface_present,Tarnyko/weston-xdg_surface_present,krezovic/weston