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: 0cca6b14

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



Change-Id: I0d4bcc1fb223f641940b8e88df7f4051435ad220
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>