Fixing drag outline not getting drawn when the shortcuts popup is shown.

Shortucts popup uses predrag listener to manage the transient state of
the icon. Fixing the order of PredragListener, such that predragEnd gets
called before dragStart. This allows the transient state to be cleared
before any other state changes are done by onDragStart.

Bug: 62544416
Change-Id: I77c9a1aa17a15fe6f9f342af7a7fe3092a9d026b