AccessibilityInteractionController crash with IndexOutOfBoundException.

1. The findAccessibilityNodeInfosByTextUiThread was reusing an ArrayList
   instance also used by the logic to initialize an AccessibilityNodeInfo.
   Hence, if the find method got some view and creates the infos for them
   the method creating the info was reusing the same array list and was
   nuking its contents.

bug:6556585

Change-Id: I1d013bf7b1f715f8b4c4ba60c677233bec40647c