Fix an issue where the dot might not appear

When the stack is animated to expand, we set a different controller
on the view, when this happens we clear all animations on the
view. This clobbers the animation on BadgedImageView to show
the dot. Fix for this is to set the controller THEN update the
badges / dots.

Test: manual - add a bubble, add a second bubble, expand the stack
             => verify the unselected bubble has a dot
Bug: 339710164
Change-Id: I88e93979ed23dd01f7bc07f2812e66faff5d7522