Merge "Update datagram transfer states internally first and then send updates...

Merge "Update datagram transfer states internally first and then send updates to clients." into udc-dev am: 5b524109 am: 14beaa4f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/22612801



Change-Id: I8b9538f27fea205174429db64ec93208c18f2602
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>