Merge "Add @VisibleForTesting to getUniqueLabel()" into main am: eea7eaad0b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/3152538

Change-Id: I2893ec021cdc3b4dfd48076354bf7c92a803c673
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>