Merge "Animate overview grid task dismissal when shifting tasks." into sc-dev am: 199c1850fb am: cd641f37d7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14173245

Change-Id: I4c16714a4e589008fd784ea5f8545e7762ae1c82