Merge "Add public getter for IpPrefix" into main am: 149868f1b1 am: b6f136c461

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2802926

Change-Id: I829963c2edb6eac63a0a1b9283461c540da65bec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>