New ctor added without optional and media specific fields. Bug: webrtc:10739, b/246753278 Change-Id: I7e15849aced6ed0a7ada725ea171a15ea1e9bc5a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/275941 Reviewed-by: Ivo Creusen <ivoc@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38124}