gdk: Use the last alive grab in order to get the event window
gdk: Use the last alive grab in order to get the event window

If an active grab kicks in on a different window, _gdk_display_has_device_grab()
would still find the former implicit grab for the window below the pointer, thus
sending events to an unrelated place.

ebassi/gtk,bratsche/gtk-,grubersjoe/adwaita,alexlarsson/gtk,Lyude/gtk-,jigpu/gtk,jessevdk/gtk,Sidnioulz/SandboxGtk,Lyude/gtk-,jigpu/gtk,jessevdk/gtk,alexlarsson/gtk,chergert/gtk,grubersjoe/adwaita,alexlarsson/gtk,jessevdk/gtk,ahodesuka/gtk,msteinert/gtk,davidt/gtk,ebassi/gtk,davidgumberg/gtk,jigpu/gtk,msteinert/gtk,Adamovskiy/gtk,msteinert/gtk,alexlarsson/gtk,Lyude/gtk-,jadahl/gtk,msteinert/gtk,jigpu/gtk,davidgumberg/gtk,chergert/gtk,jadahl/gtk,Lyude/gtk-,jessevdk/gtk,davidt/gtk,ahodesuka/gtk,Distrotech/gtk2,davidgumberg/gtk,grubersjoe/adwaita,jadahl/gtk,grubersjoe/adwaita,Distrotech/gtk2,Distrotech/gtk2,ahodesuka/gtk,Distrotech/gtk2,ebassi/gtk,davidgumberg/gtk,davidt/gtk,Adamovskiy/gtk,alexlarsson/gtk,Distrotech/gtk2,bratsche/gtk-,ahodesuka/gtk,bratsche/gtk-,ahodesuka/gtk,davidgumberg/gtk,chergert/gtk,davidgumberg/gtk,Adamovskiy/gtk,Adamovskiy/gtk,Adamovskiy/gtk,bratsche/gtk-,davidt/gtk,Sidnioulz/SandboxGtk,grubersjoe/adwaita,ebassi/gtk,jigpu/gtk,alexlarsson/gtk,Distrotech/gtk2,msteinert/gtk,jigpu/gtk,bratsche/gtk-,davidt/gtk,jigpu/gtk,ahodesuka/gtk,Lyude/gtk-,ebassi/gtk,davidt/gtk,jessevdk/gtk,Sidnioulz/SandboxGtk,jadahl/gtk,jadahl/gtk,Adamovskiy/gtk,chergert/gtk,Sidnioulz/SandboxGtk,chergert/gtk,jadahl/gtk,chergert/gtk,Lyude/gtk-,msteinert/gtk,grubersjoe/adwaita,jessevdk/gtk,ebassi/gtk,grubersjoe/adwaita,jadahl/gtk,davidgumberg/gtk,jigpu/gtk,Adamovskiy/gtk,ahodesuka/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,jessevdk/gtk,alexlarsson/gtk,chergert/gtk,chergert/gtk,bratsche/gtk-,Lyude/gtk-,Adamovskiy/gtk,jadahl/gtk,ahodesuka/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,grubersjoe/adwaita,davidgumberg/gtk