[Feature request] Return to top menu when SmartTube is opened within SmartTube

[y-lee]

(Let me know if this is not possible and I will close the ticket.)

Button Mapper lets me quickly open apps, including SmartTube, with a specific keyboard key. Is it possible within Android TV (I am on Nvidia Shield TV) to, if I push the key for SmartTube within SmartTube, exit from wherever I am and return to the top menu?