Enable by default the look for the first echo. Bug: webrtc:14205 Change-Id: Iae904679c1432f3a0766263907cf376903685b97 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/278043 Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org> Commit-Queue: Lionel Koenig <lionelk@webrtc.org> Reviewed-by: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38452}