treeview: respect focus-padding when rendering focus
treeview: respect focus-padding when rendering focus

Adwaita had a hack to work this around, but now that we're moving focus
ring rendering into GTK, we can just fix the treeview instead.

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