Merge "Register VcnManager with VcnFrameworkInitializer" into main am: e811f5a5fd

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3291653

Change-Id: Ic171c6dc7efe33d471a98439d090467d6c752487
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>