Merge "Add flags for new home gardening mode" into tm-qpr-dev am: 3c8ae3efff

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20123118

Change-Id: I97822109533d456bc10a7e46da97f07086f7c568
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>