media: Drop demuxed packets if they fail bitstream conversion

Instead of reporting an error and stopping playback, now we simply drop
packets if they fail bitstream conversion. It protects accelerated
decoder, but also preserves a lot of tolerance to slightly corrupted
videos.

We drop packets for a lot of reasons, it's okay to add another one.

This CL also reverts http://crrev.com/1434331 because its approach
turned out to be not effective.

Bug: 403414998, 404090745, 406162257, 393652851
Test: playing videos from the bugs above
Change-Id: I9cdf0799f43e0b6cb65359fbfbaf9baeb20581e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6408020
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Eugene Zemtsov <eugene@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1439692}