Instead use `parameters_.config.rtp.ssrcs.size()` directly to make decisions about the number of temporal and spatial layer used. Bug: none Change-Id: Icba553178ae7fea281c2c67654c510228d9ab5b6 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/237080 Commit-Queue: Philip Eliasson <philipel@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35299}