Fixes the ENR threshold used in the dominant nearend detection when the kill-switch WebRTC-Aec3UseLegacyNormalSuppressorTuning is pulled. Bug: webrtc:8671,chromium:911141 Change-Id: I30ee58009633b3a9e12eff692226baada624a049 Reviewed-on: https://webrtc-review.googlesource.com/c/112903 Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org> Reviewed-by: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25880}