Reset RecentsView when detached from window

- onDetachedFromWindow is a sign RecentsView or even activity will be destroyed, if we don't reset RecentsAnimationController will be stuck without finsihing, causing live tile to be stuck on screen

Bug: 339747262
Test: Swithcing apps (recents button, quick switch, OVerview) from Maps driving mode, live tile not stuck
Flag: EXEMPT bugfix
Change-Id: I990cfe0fc814c9125dbfbaf8a298f1b871e0194e