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

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

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



Change-Id: I2d8cb327e5d7960a1fe0a2af33c48a0b398d2910
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>