Decoding fails for images with 4:2:0 chroma subsampling

[passivestar]

Some textures found online are using 4:2:0 chroma subsampling and they can't be decoded in Godot, while every other app has no trouble with them

More context here:
godotengine/godot#91600

Problematic image from the link above:
https://github.com/user-attachments/files/15511511/new_test.zip

[Calinou]

I don't think decoding fails with every 4:2:0 image. Otherwise, most JPEGs encoded with quality < 90 would fail to load (many apps automatically use 4:2:0 for all quality levels < 90).