Also set call direction during single party call emulation

In single party call emulation during a conference call, also
report the call direction to Telecom so it can be correctly tracked
in the call log after the call ends.

Bug: 153277327
Test: atest TeleServiceTests:ImsConferenceTest
Merged-In: Iaa9a58d2a31efe470e59c5c7bdc1aacea139fce8
Change-Id: Iaa9a58d2a31efe470e59c5c7bdc1aacea139fce8
2 files changed