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

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

Change-Id: I1ebc292273bd37036cb2e7bc8f473421a5ae09f2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>