[Cherry-pick] Move AttributionNode out of atoms.proto am: 42c90919cd Original change: https://android-review.googlesource.com/c/platform/frameworks/proto_logging/+/3451630 Change-Id: I92543dceb5c29956f67606a20788ae11ff76859c Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>