Merge changes from topic "explicit_chain_support" into main am: 12b06ae1a8 am: 27a00a7947

Original change: https://android-review.googlesource.com/c/platform/system/secretkeeper/+/2901047

Change-Id: If9a9e4489f6628000f7235dd3e86c89ace37f2cc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>