Mark old overload deprecated. This allows to migrate both calls through AudioDecoderFactory and direct calls to AudioDecpderOpus trait. Bug: webrtc:356878416 Change-Id: I1502aee5b18aac43a8258e77b770c8e73a056f92 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/359741 Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Auto-Submit: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Jakob Ivarsson <jakobi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42793}