merge_pr_58481

Add JPEG XL interop-2026 coverage and decoder tests

Introduce automated interop WPT coverage and strengthen Blink JXL decoder unit tests for orientation, ICC/CMYK, and high bit-depth fixtures.

Bug: 484065185
Change-Id: Ie5f33c477b616e03b3f3a21d006c6ae1da09294e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7572466
Commit-Queue: Philip Jägenstedt foolip@chromium.org
Reviewed-by: Philip Jägenstedt foolip@chromium.org
Cr-Commit-Position: refs/heads/main@{#1598968}