Prevent NewOutgoingCallBroadcast from being sent for self-managed calls.

When sending a self-managed call, prevent the new outgoing call broadcast
from being sent.  It realistically has no business being sent for self
managed calls.

Test: Used Duo and Voice APKs to reproduce issue.  Verified this fix corrects it.
Bug: 66671858
Change-Id: I7b5272f03bd174100cd2e12641524f4adfc1892f