Defer intercepting touch events to actually start shifting tasks am: 27922716 am: 3f229474

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23163166



Change-Id: Ic0c70580a157a2794279cc1124e2b3f5c13b21cd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>