Store just the fields that are used by RtpTransportController
Avoid redundand map lookup when updating that information
Bug: webrtc:13757
Change-Id: I1e5a000557bde1735979c1cf8fa762936a64ffd0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/305023
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Emil Lundmark <lndmrk@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40063}