Revert "Revert "RESTRICT AUTOMERGE Add feature flag to disable resource...

Revert "Revert "RESTRICT AUTOMERGE Add feature flag to disable resource updatability APIs"" am: 704a86f3 am: 965185b7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18344247



Change-Id: Idaab7634e9a7701a0b07f306d5c5258944cecb8d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>