To make Environment available for creating AudioEncoders in follow ups Bug: webrtc:343086059 Change-Id: I0965155915caeee28964ce8406045beeabaa0185 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/353741 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42460}