Merge "Clean up prebuilt stub deps & add comment" into main am: e1d899f2ad am: b6bb6b70d9 am: b45e69de0c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2767025

Change-Id: I4d8ea300f539820bac644dbda384c6cb15ded02e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>