Fix launching app animation from launcher all apps.

This cl includes
	- making pinned taskbar animate slide in/out animation from bottom of screen.
        - no icon aligment with hotseat when taksbar is pinned

The solution
	- upon state change applied on TaskbarLauncherStateController. offset taskbar background and icons to bottom of screeen and animate with slide in/out effects.

Test: manual, presubmit
Bug: 314279101
Flag: EXEMPT bugfix

Change-Id: Ife336ebd57eb2f60c2bc33ed6a4527c42111808f