Image block always ads lazy loading

[flipflap]

What problem does this address?

The image block and gallery ads the loading="lazy" to every image. But images in the viewport (Below the fold) shouldn't have it for website performance reason (PageSpeed). The featured image on the other side doesn't ad it.

What is your proposed solution?

The image and gallery block should habe a native option setting, to ad loading="lazy" as well ad the featured image.

[flipflap]

@ndiego

[skorasaurus]

Related, this was requested specifically for the cover block in #46789 (comment)

[evantishuk]

Also noted (and closed) 5 years ago here:

#15753

Kinda thinking this might not get integrated.