Merge "Throw if isUidNetworkingBlocked is called below U" into main am: 5784191a76

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3002349

Change-Id: If1ca7722b358693136922a6f22b001f09886497b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>