Instead allow RtpPacket to exceed configured capacity when setting payload Bug: None Change-Id: I02fc080ffa3127ffbe0dade1f200dd7456a6a128 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/312880 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40471}