Ensure acked bitrate is not used for lower loss based estimate if estimate improve. Ensure LossBasedBweV2 is in state DelayBased if reached max rate. Bug: webrtc:12707 Change-Id: I20230b99e0c2b530570e2f2de8ea88179f795c50 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/324140 Reviewed-by: Diep Bui <diepbp@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40977}