Fix concurrency issue related to new outgoing call broadcast. am: c125eeb7...

Fix concurrency issue related to new outgoing call broadcast. am: c125eeb7 am: 98123827 am: a41ca9b9

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telecomm/+/1478506

Change-Id: I9a4e51fd60d35ad83f84db17b6d4d029237a3b38