Merge "Only renew/rebind valid prefixes at ReacquireState." into main am: d2888426b2 am: b1136e5f3d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2846094

Change-Id: Ic5ee011a8f861a9b1137400b922e1e785dcdb816
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>