[bc25] Define animated transitions for Dual Shade overlays.
These animated transitions are temporary, and will be replaced by more
refined animations in the future.
In addition, define the user actions to switch between the notifications
and quick settings shades.
This CL also removes some obsolete remnants of scene shade transitions.
Bug: 356596436
Flag: com.android.systemui.scene_container
Flag: com.android.systemui.dual_shade
Test: Manually tested by expanding and collapsing the shade over the
lockscreen and gone scenes, as well as attempting to overscroll.
Change-Id: Iabf1e7b763a94de9032d6f3cebf80ad0baaf2d7b
13 files changed
