Merge "Define file_diff allowlist for the next builds." into main am: 9aa892c6

Original change: https://android-review.googlesource.com/c/platform/build/+/3295411



Change-Id: I689291e0e6c2bca4752e90feb72f72a1a08e53a1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>