RESTRICT AUTOMERGE Add feature flag to disable resource updatability APIs

Bug: 225178429
Test: manual
Change-Id: I21c5fd224911a8e3f921a8f0c88aea292377e9d5
(cherry picked from commit 50f529a1e141a103410df6da1aefba8c7506f21a)
Merged-In: I21c5fd224911a8e3f921a8f0c88aea292377e9d5
1 file changed