no viewingHint

This is a manifest where there is no viewingHint. I think they should be displayed as individuals. There are 4 canvases.

Links:

• https://iiif-commons.github.io/fixtures/examples/thumbnail_panel/no_viewing_hint/v2/manifest.json
• UV 3
• UV 4
• Mirador
• Clover
• Thumbnail Panel