Because of our asymmetrical codec situation, it's possible to have
send only codecs that we cannot negotiate even with ourselves.
This means that we should not have a DCHECK, but just a plain error.
Bug: webrtc:15064
Change-Id: I0c170e5c7f356197bcb04bcecb8259c344423ccb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/323183
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40939}