Ensure conference doesn't support video if video conf not supported.

If the carrier config indicates that video conferencing is not supported
ensure that the ImsConference cannot be set to support video from the
remote end or upgrade to video.  There are cases where the network
signaling may indicate that video is supported for a conference call.

Bug: 30067920
Change-Id: I6803d2679cf83b9b577038ea53f3ea957c7aa407
2 files changed