Only update address of IMS call for incoming calls.

Although the modem will report address changes for outgoing calls, we will
prevent those changes from being propagated to the UI.  Cases such as
calling the user's voicemail will cause the dialed number to change to
the SIP URI of the voicemail server, which is not apppropriate for display
to the user.

Test: Manual
Change-Id: Ief978ee186bb6f9727e82b0c2a550b0d7af4ee28
Fixes: 63743426