Merge "Disallow fastboot to modify locked DSU" into main am: 66b68dde92 am: a564954bc8 am: 3f86c25d2f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2744993

Change-Id: I3ccc12afab34d4e209f1e3a8423289e0ad47ed87
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>