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}