As stashed frames are retried their `tl0_pic_idx` are again unwrapped which can lead to the `tl0_unwrapper_` to unwrap the `tl0_pic_idx` of newer frames backwards. Instead unwrap the `tl0_pid_idx` only once and save it with the frame if necessary.
Related VP9 CL: https://webrtc-review.googlesource.com/c/src/+/253844
Bug: none
Change-Id: I8265dc5f36ee257db92d79cec719f56b165d3855
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/256966
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36356}
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