Merge "Revert "Demoting testLaunchAppInSplitscreen_fromTaskbarAllApps from presubmit"" into udc-qpr-dev am: 14223c8fb6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24484260

Change-Id: I59831f0e9d68e0686b76c2d4916907e5c3b5a624
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>