Intercept touches in the emulated DisplayCutout

Added a RegionInterceptingFrameLayout that can add the regions of its
children to the touchable region of the inernal insets, and added
DisplayCutoutView as a RegionInterceptableView child.

Test: taps inside the DisplayCutout view do nothing
Change-Id: I86120b39084da2b686d9954b4b16ea94efbd0f95
Fixes: 74946584