Merge "Allow user to select second split app from Taskbar" into tm-qpr-dev am: d5525c3b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20365694



Change-Id: I8d1e153a3d9f2b04293a41a0e008cc348fe028d9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>