Ensure that custom actions are available to all apps items

-> When BubbleTextViews were being recycled, the RecyclerView was clearing the
   AccessibilityDelegate. Ensure that this is reset by the adapter when a
   BubbleTextView is reused.

issue 25948877

Change-Id: I95dd21bfdcd602a67925d1b8f06e6ca92d1d7203
(cherry picked from commit 6e92f053)