inspector: Fix initial state of dark switch
inspector: Fix initial state of dark switch

Noticed while debugging a totem problem.

jessevdk/gtk,grubersjoe/adwaita,ahodesuka/gtk,ahodesuka/gtk,jadahl/gtk,Lyude/gtk-,davidgumberg/gtk,jessevdk/gtk,alexlarsson/gtk,jigpu/gtk,chergert/gtk,grubersjoe/adwaita,grubersjoe/adwaita,alexlarsson/gtk,Adamovskiy/gtk,chergert/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jessevdk/gtk,alexlarsson/gtk,Lyude/gtk-,Lyude/gtk-,ahodesuka/gtk,ahodesuka/gtk,Lyude/gtk-,jessevdk/gtk,ahodesuka/gtk,jessevdk/gtk,alexlarsson/gtk,grubersjoe/adwaita,jigpu/gtk,chergert/gtk,alexlarsson/gtk,Adamovskiy/gtk,jigpu/gtk,jadahl/gtk,davidgumberg/gtk,davidgumberg/gtk,alexlarsson/gtk,davidgumberg/gtk,jigpu/gtk,chergert/gtk,jadahl/gtk,Lyude/gtk-,chergert/gtk,davidgumberg/gtk,alexlarsson/gtk,jigpu/gtk,grubersjoe/adwaita,chergert/gtk,jigpu/gtk,Adamovskiy/gtk,Adamovskiy/gtk,jessevdk/gtk,jadahl/gtk,ahodesuka/gtk,Lyude/gtk-,jessevdk/gtk,jadahl/gtk,davidgumberg/gtk,Adamovskiy/gtk,Adamovskiy/gtk,Lyude/gtk-,ahodesuka/gtk,jigpu/gtk,alexlarsson/gtk,Adamovskiy/gtk,grubersjoe/adwaita,davidgumberg/gtk,chergert/gtk,jadahl/gtk,ahodesuka/gtk,jadahl/gtk,chergert/gtk,jigpu/gtk,davidgumberg/gtk,Lyude/gtk-,jadahl/gtk,grubersjoe/adwaita