Product link not available on CartSidebar when product has only 1 variation or SKU

[fabsantandrea]

Describe the bug

• When a product has no variations and you add it to the cart, it has no link (slug) available on CartSidebar.

Expected behavior

• All products, regardless of not having variations, should have a link to their detail page.

Current behavior

• This is a screenshot of the items property that comes from the useCart hook:
  

• As you can see, the product with variations comes with differents slugs for each variation, but the product that doesn't have variations, it doesn't have a slug in the object.

Additional context
Add any other context, screenshots, or comments about the problem.

[victors1682]

In the useCart hook, we should have access to either the Link or linkText along with the product itself. This will give us the flexibility that allows us to utilize slugs if the product has variants. Otherwise, we can use the default product link.