Drag and drop for PhoneFavoriteTileView but not when dialpad is open

Drag actions were disabled for PhoneFavoriteTileView when fixing a bug
that caused dragging when the dialpad was up. This CL restores the
original functionality while fixing the dialpad bug.

Bug: 17626737
Change-Id: I3a352088ff44c81230677d771479e367c9fe7856