Avoid CalledFromWrongThreadException in BubbleController

Problem: {
            1.CalledFromWrongThreadException can happen if OneHandedTransitionCallback is called from another thread
}

Solution: {
    1. Update the views in UI thread to avoid CalledFromWrongThreadException
}

Bug: 288588813
Change-Id: I23f535f89be9a14491d19dd16ec844d946dc486a