listbox: Emit ::row-selected as we used to
listbox: Emit ::row-selected as we used to

The listbox selection test was failing because we were not
emitting these signals anymore.

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