widget: Flip execution order of GTK_PHASE_TARGET/BUBBLE
widget: Flip execution order of GTK_PHASE_TARGET/BUBBLE

the "bubble" phase used to run before event handlers before GTK_PHASE_TARGET
was added, in order to keep phases in the expected order, move GTK_PHASE_BUBBLE
to be run (still invariably) after event handlers.

The only behavioral change should be wrt widgets wanting mixed event handler/
gesture handling, they could previously attach the gesture to the bubble phase
and check for gtk_gesture_is_active() in the event handler to bail out, they'll
have to use GTK_PHASE_CAPTURE for that purpose from now on.

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