Support splitting from workspace with Widgets

* Need to insert widget's icon in animation
* Launching w/ same package app + widget is
broken

Test: Launched apps from predicted apps + widget,
hotseat apps + widget
Flag: ENABLE_SPLIT_FROM_WORKSPACE_TO_WORKSPACE
Bug: 276361926

Change-Id: I3e30189e56536371ebd0acfbdd2c073a882cc731