- Add `srcset` and `sizes` inside the editor.
- Add `data-wp-attachment-id` and `ata-wp-percent-width` to the img tag. Will be used on the front-end to properly set `srcset` and `sizes`, and also img `width` and `height` where missing.
- Improve setting/resetting the image dimensions.

Add `srcset` to the attachment data from the API and to the data in the media modal.

See #6177.

…d warnings after ignore!)

Most functionality works as expected. Still todo: image dimensions by entering width or height. These need to override the `scale` attribute.

- Don't save srcset and sizes in block props.
- Better names?
- Clean up few eslint-disable-*.

Tweak some names, clean up few things, simplify the php parts, fall back to the original block html if some image data is not there.

- Better handling of existing (old) image blocks and just uploaded images.
- Add support for scaled external images.

Added few more block props that are passed to the PHP filters in WP. Now themes and plugins can easily decide how to handle all aspects of rendering the image block on the front-end.

Also fix after 8322628