Merge "Enable Gratuitous Neighbor Discovery feature by default." into main am: ac2304f146 am: 17e9a2f8be

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2651479

Change-Id: Ib294f2db9fcab886f36a80ea915879bc5688fe5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>