Fix notification dot not always being up to date.

- Prediction row views were never updated when notification changes.
- FloatingIconView set the BubbleTextView to force hide dot, but never restored it.
  BubbleTextView is instanceof IconLabelDotView, so its already handled in the end runnable

Bug: 183360736
Test: 1. swipe up to go home such that the closing app has a notification,
         note that the notification dot is properly updated
      2. have all apps open
         make notification update for a predicted app
         ensure dot is properly updated

Change-Id: I35dacf9b71a3d8b8a857be450690d65ea9199bf6