Update app clips UI to support edge to edge

- Android V is introducing forcing apps to adopt edge to edge display.
- So, updating the app clips UI by following
  https://developer.android.com/develop/ui/views/layout/edge-to-edge.

Bug: 340837939
Flag: EXEMPT bugfix
Test: Launch app clips and manually verify this on device.
Change-Id: Ic081d929bc2f0ef104a83477ff628caad3a400bf