AV1 Realtime encoder stats changed Bug: None Change-Id: I50a8d36c45a775b3c0127476fb32c3d68d288508 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/260480 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Marco Paniconi <marpan@google.com> Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Jerome Jiang <jianj@google.com> Cr-Commit-Position: refs/heads/main@{#36712}