Merge "Support list of IaPrefixOption in PrefixDelegation class." into main am: 1fe340fa49

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2691413

Change-Id: I172bc2547286ab689770bb54eb829eb749c7419b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>