Update visibility to allow per-target Android.bp in AndroidX am: cf5ea95e16 am: f78ba4ea82 am: 209efeaec4

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

Change-Id: I116672c667ad6161d68c3c6f51be7fdad3fe3db3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>