Ensure a second probe can be sent, after the first probe has been sent, even though no large
media packets have been sent.
This fixes a bug in https://webrtc-review.googlesource.com/c/src/+/294521
This cl also refactor and simplify a bit. Remove the unecessary state kSuspended.
Bug: webrtc:14928
Change-Id: Ia561441ea3d8b648b025eedd0618c82cca03b418
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/296882
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39547}
54199f9b4b