A list whose focus reached its first or last row scrolled on and moved the
focus a row in; the pointer hovering that row took the focus back the next
frame it moved, so the list ran through everything and the row under the
pointer never stayed lit (the game types, the lobby, the internet lobby).
A list now scrolls on at its end only when the d-pad (keys, controller,
the wheel) put the focus there (ui_widget_port_pointer_focused).
(cherry picked from commit e74f5bbb541a480a72871adeb719472908607d12)