Fix bug where dragview gets stuck on screen.

* Since the BubbleTextViews views do not have a listener, the long press
  was still getting triggered even though it was in a pressed state.
* We only trigger long press if the view is not pressed or if there is no listener.
* A listener is only added for widgets, and for long press wiidgets are not
  pressed state.

Bug: 162636845
Test: manual test, repo steps in bug
Change-Id: Ia9df12cf31a0844403d69ddacebf2bdbc5c59d3b
(cherry picked from commit 6fa63473)