fix #5815 uncomplete node unselection in treeview
fix #5815 uncomplete node unselection in treeview

LogicalDash/kivy,matham/kivy,akshayaurora/kivy,akshayaurora/kivy,LogicalDash/kivy,rnixx/kivy,kivy/kivy,inclement/kivy,inclement/kivy,matham/kivy,kivy/kivy,LogicalDash/kivy,LogicalDash/kivy,rnixx/kivy,matham/kivy,kivy/kivy,inclement/kivy,akshayaurora/kivy,rnixx/kivy,matham/kivy