Without this, if max allocated bitrate is lowered while exponential probing is ongoing, a new probe can be sent at a rate of the new low max allocated bitrate which may cause BWE to decrease. Bug: webrtc:14928 Change-Id: Id8e314740c2403d3b801d28f634dbc718f77c16e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/343384 Reviewed-by: Diep Bui <diepbp@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41929}