privacy: Disable settings relying on Location Services when unavailable
The privacy panel has a master switch for location services which should really be a master switch.
Currently, Night Light (in the Displays panel) and Automatic Timezone (in the Date & Time panel) still have their location-based settings available even if location services isn't available.
The privacy panel should also point to those 2 other panels in an explanatory text.
CC @mbridon