Fallback - Add original image and height attribute

[linkrb]

To avoid the Cumulative Layout Shift we should add the image and height attribute.

When we use the thumbnail it's ok. We take the height define in the filter

            filters:
                # use and setup the "thumbnail" filter
                thumbnail:
                    # set the thumbnail size to "32x32" pixels
                    size: [32, 32]

But with the relative filter we can't determinate the height of the image.

        big_filter:
            filters:
                relative_resize:
                    widen: 735

If we have only one dimension. We need to push the height and width of the original image
With that the browser manages to determine the ratio of the image.

An idea -> with the data_root and the path of the image we can retrieve the width and height.

getimagesize($this->data_root.$path)[3];

[DjLeChuck]

Fix with v1.0.7 :)