Removes the only remaining dependency on sequence number in NetEq
except for the NackTracker (which arguably doesn't belong in NetEq).
This fixes a potential issue where FEC is not perfectly aligned with
the original packet boundaries, causing both the FEC and the original
packet to be decoded.
Bug: webrtc:13322
Change-Id: I3abec9ebfc194976fca42d5f4f4ed4ee136f44ef
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/300560
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39815}
b70a36e770