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 am: 29bdc3e3

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



Change-Id: I7d94f0f3e44d1cf13f3f972d5a73164344d93935
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>