Enable returning to the previous app after Overview -> All Apps.

Back gesture from All Apps (history for state):
If previous state was background, use quick switch state to return
to the previous app.

Swipe down from All Apps:
Return to previous state (which will be Normal or Quick Switch).

This animates from All Apps overview scale/translation to full
screen of the previous task. In this case we are animating from
0.5x Overview scale and 0 translation (centered).

Video: https://drive.google.com/file/d/1cpQjtFemtJ4zu9aWu7IiUftWWVGFrbtM/view?usp=drive_link&resourcekey=0-1zuMEvYNsk81YBxv8o10hA

Note: This is mostly for the gesture/state handling but it would
be nice to polish this transition in the future.

Bug: 283336332
Test: Manual
Flag: ENABLE_ALL_APPS_FROM_OVERVIEW
Change-Id: Iec92df933ce6522f181d3d5ca889b6a6469f4cc6