GtkMenuItem: fix initial accessible selection state
GtkMenuItem: fix initial accessible selection state

When the accessible is created for an already-selected
menuitem, we were not properly setting the state of the
the accessible. Fix that.

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