Merge "Fix quick switch in between two split pairs crash" into tm-qpr-dev am: 750009face am: fc155dd5b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21460191

Change-Id: I5fcafaf72bd12d1001f9c61b58f96aa9a351fd66
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>