Bugfix: In case of unarchival, do not add an installer task to add workspace item. am: f8302c388f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/26598401

Change-Id: I538d3804b9fdd8ed6d8425abaad38087083d15d7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>