Improve call streaming start transaction logic. am: 09bc1566 am: 90834327

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/23467971



Change-Id: Iec6bd5cd4e25f286202f1acd46820dc37db985b6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>