Merge "Set up a place holder tile for desktop" into tm-qpr-dev am: aeea6768 am: 98b79c3e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/19914914



Change-Id: I6b3003aa4b61ff76dfc68bd2a10607b5bb27e9a1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>