Update visibility to allow per-target Android.bp in AndroidX am: cf5ea95e16 am: 9bd7675cc7 am: eb4e25bee5

Original change: https://android-review.googlesource.com/c/platform/external/kotlinx.metadata/+/2794375

Change-Id: Ic8d29beed60b84f51c97344840c5cc2bc90575ae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>