If we have been sending padding for 1s and estimate still is unchanged, then stop padding by transitioning to decrease state. Bug: webrtc:12707 Change-Id: I0dca2e5cd98263fc7fae9882c23c21634413c7a0 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/324740 Reviewed-by: Per Kjellander <perkj@webrtc.org> Commit-Queue: Diep Bui <diepbp@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41018}