Reland "Update xHE-AAC tests to include more representative content."

This is a reland of commit c813b0b

Original change's description:
> Update xHE-AAC tests to include more representative content.
>
> This changes a few things about the xHE-AAC tests to prepare
> for landing support on Windows.
> - The 29.4kHz mono sample isn't recommended for testing by the
> xHE-AAC team, so add a 44.1kHz one from the same Android test.
> - Cleans up the test logic to use std::array instead
> of requiring a raw_ptr<> exclusion.
> - Removes hash testing for xHE-AAC since platform decoders will
> apply device specific DRC choices.
>
> Bug: 1289825
> Change-Id: I6193cbd504c5d3070125f9f29d3bf7068cee4445
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4375508
> Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
> Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
> Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1123216}

Bug: 1289825
Change-Id: If445d97475d3ee1e81263be0afc21e50804af4ab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4375071
Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1123330}