Add a bubble API to ask launcher to animate bubble bar location

Instead of updating bubble bar location in launcher while we are
dragging the expanded view, create an API to animate bubble bar to a new
location.
The animated location is transient and won't update the layout location.

Bug: 330585402
Test: drag bubbles left and right
Flag: ACONFIG com.android.wm.shell.enable_bubble_bar DEVELOPMENT
Change-Id: Idb1fddeb261ece24933e5962857c5e322ca29890