Merge "Revert "Remove app cloning feature flags"" into udc-dev am: 0d7e838e am: d129a44e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23353191



Change-Id: I252866d1f01590fb5af1f14b11c43f0a6b6a274c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>