window: Allow more space at edges for popovers
window: Allow more space at edges for popovers

We're clamping to the visible window edge, which misplaces text handles.

chergert/gtk,davidgumberg/gtk,jigpu/gtk,Adamovskiy/gtk,alexlarsson/gtk,grubersjoe/adwaita,alexlarsson/gtk,grubersjoe/adwaita,alexlarsson/gtk,chergert/gtk,Adamovskiy/gtk,grubersjoe/adwaita,Adamovskiy/gtk,jigpu/gtk,grubersjoe/adwaita,grubersjoe/adwaita,davidgumberg/gtk,jadahl/gtk,chergert/gtk,chergert/gtk,davidgumberg/gtk,davidgumberg/gtk,grubersjoe/adwaita,chergert/gtk,jigpu/gtk,jigpu/gtk,jadahl/gtk,alexlarsson/gtk,alexlarsson/gtk,davidgumberg/gtk,Adamovskiy/gtk,Adamovskiy/gtk,davidgumberg/gtk,jigpu/gtk,alexlarsson/gtk,alexlarsson/gtk,jigpu/gtk,alexlarsson/gtk,Adamovskiy/gtk,Adamovskiy/gtk,Adamovskiy/gtk,jadahl/gtk,davidgumberg/gtk,grubersjoe/adwaita,jadahl/gtk,chergert/gtk,chergert/gtk,jigpu/gtk,davidgumberg/gtk,jadahl/gtk,jigpu/gtk,jadahl/gtk,grubersjoe/adwaita,chergert/gtk,jadahl/gtk,jadahl/gtk