As described in #1187 (comment), If the image is smaller than the content or wide size, it returns the wrong (bigger) size. In such cases, we need to return the smaller value among the image width, content size, or wide size.

The different widths used in theme.json for content and wide size.

• 620px
• min(640px, 90vw)
• 90vw

We should parse the width so we can use proper width in sizes to get proper image size.