Strips '+' and ' ' characters from the phone number for the generated
link, but doesn't guarantee the link is valid because the number
registered isn't validated for now.
We configured Paperclip to convert images to JPG in some cases but I
omitted that here because we don't need it. If an image is better
represented as PNG or another format then the user should be able to
choose that.
Some specs were also testing the generated URL but the Active Storage
URL doesn't contain a style name anymore and it's not helpful to test
the URL.
Display only if all conditions are met:
- Variant is not a bulk buy
- Shop preference is true for `preferred_product_stock_display`
- Only 3 (or less) items are remaining in stock
- No item for this variant is already to cart
