Ensure initial second probe can be disabled. Can configure separate probe duration if the network state estimate is known. Can probe immediately if network state estimate increase more than a factor Bug: webrtc:14392 Change-Id: Iefb980f0b10c7c51db62793c3bd3f187fc67593d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/273349 Reviewed-by: Diep Bui <diepbp@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37966}