Deprecate VoiceEngineInterface::CreateSend/ReceiveChannel with AudioCodecPairId.

The AudioCodecPairId parameter is unused and useless in these functions.
This CL adds new pure virtual functions without this parameter to
VoiceEngineInterface, and deprecates the old ones (providing a default
implementation that calls the new ones).
All implementations and callers in the codebase are updated to use the new
functions.
Also removed the unused AudioCodecPairId parameter from WebRtcVoiceSendChannel and WebRtcVoiceReceiveChannel constructors and their underlying stream classes.

Bug: webrtc:398550915
Change-Id: I276e37fdb6d4294ffa8b4b259a3a0f0b0b88cdd3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/437281
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#46586}