Animate FooterView position after swipe from lock screen to full shade

Bug: 402749572

Test: swipe down from lock screen to go to full shade
      => footerview animates y as part of appear animation

      open/close/scroll shade
      => no regressions to footerview

Flag: EXEMPT BUGFIX

Change-Id: I672edf1da612a7d367978f9aea8f4bb0228817c0