crtc-mode-xrandr: Take RR_DoubleScan and RR_Interlace flags into account

Otherwise we often advertise wrongly calculated modes.
Original patch from Jonas Ådahl and the xrandr project.

Closes https://gitlab.gnome.org/GNOME/mutter/-/issues/275

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2190>