c02c8a85ce
When creating a transceiver when creating an answer, the media kind of the transceiver was never set correctly initially. This would lead to a GST_WARNING being produced about changin a transceiver's media kind. Fix by retrieving the GstSDPMedia kind from the offer instead as the answer GstSDPMedia has not been set as the answer caps have not been chosen yet. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1664>