Animate bubble bar location changes

When it is not the initial bubble data, animate bubble bar location
change.

Bug: 313661121
Flag: ACONFIG com.android.wm.shell.enable_bubble_bar DEVELOPMENT
Test: manual, move expanded view from one side to the other, observe the
  location change animates

Change-Id: I52117a31d02e7160ca1d3dc3e724bda2e38f6cbf