Previously the information was provided from rtpjitterbuffer to rtpbin only once the first RTCP SR was received, which is not necessary at all as all required information is available from the caps already. Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1162 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6543>