Pass all PPS NALUs as data to the platform decoder

It helps in cases when there are more than one PPS in the buffer
Video Toolbox is smart enough to find and recognize them there.

Test: mac-h264.glitch.me
We'll have more testing once we switch Mac VEA to new API,
it generates multiple SPS and PPS.

Bug: 1282056
Change-Id: Icdc98d10a4e90e2d20b38780973b05a2bea9de37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3407723


Reviewed-by: Dan Sanders <sandersd@chromium.org>
Commit-Queue: Eugene Zemtsov <eugene@chromium.org>
Cr-Commit-Position: refs/heads/main@{#962178}