The value of VP9().interLayerPred isn't used in the VP9 encoder
when scalability_mode is present.
Bug: webrtc:11607
Change-Id: I2ce606e5a91dfe087f652763cbcc258db0156f5f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/273400
Auto-Submit: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37937}