Add SysUiOverlayInputConsumer.

This consumer is used when Bubbles is expanded, and causes swipes up to hide bubbles via closeSystemDialogs rather than going all the way home.

Test: install launcher and swipe up (after including the other CL in this topic)
Fixes: 156390484
Change-Id: I36b71dd95dc45a5a547eddfe0faddf61630b6f25