ScalabilityMode should be validated against the currently allowed codecs or the currently used codec. Bug: webrtc:11607 Change-Id: Id2e6cbfad4f089de450150e1203657ed316e2f29 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/277403 Commit-Queue: Florent Castelli <orphis@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38433}