Merge "Check if mRecentsAnimationController is null before switching to screenshot" into sc-dev am: 5465527e16 am: 7c4ad155fc

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14490316

Change-Id: Ie6c639fe0e0908afb76653b484ee337ccc8d6247