Merge "Add null check for recents scaling during quick switch." into sc-v2-dev...

Merge "Add null check for recents scaling during quick switch." into sc-v2-dev am: d32a472e am: 125ea48c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15358270

Change-Id: Ifd729f96f9f291a91901dfca33f51e54cf0bb72b