Switch local split screen deaths when not playing.

When playing split screen with my 5-year-old son, sometimes I have to put him to bed and we are not ready to save the game and quit. If I am only playing split screen (not online) and hit the home button to go to the switch menu, it should act like a pause. Time shouldn't pass and I shouldn't return to us both dead and all items despawned. I understand this with online multiplayer. On local split screen, this is stupid and frustrating.