Set touchable region to full screen when glanceable hub is visible

The hub is a full-screen UI so we want the touchable region to be the
full screen. Without this change, touches when opening the hub over the
dream go to the dream instead as the shade window is not touchable.

This was not an issue with Tangor as there was no camera cut out and
thus StatusBarTouchableRegionManager was not actively adjusting the
touchable region.

Existing logic accounts for this when the scene container is enabled so
we only need to make this work with scene container disabled.

Bug: 375273090
Fixed: 375273090
Test: atest StatusBarTouchableRegionManagerTest
Flag: EXEMPT WIP will create flag soon
Change-Id: I16b73ae5e66c0b12fc0192ca52ab5f5ed038075e