Merge "aflags: read protos from all containers" into main am: ac407794

Original change: https://android-review.googlesource.com/c/platform/build/+/3001064



Change-Id: I85bc3e1b9385f2fa20e241fcb192b85927523057
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>