Add visually hidden product details when product is button

[spencercanner]

• Refactor the product isButton aria-label text into options so it can be customized
• Update wrapper to include visually hidden product details summary text when isButton is true
  • This is meant to convey the visual elements of the button that are not accessible for screen readers due to the aria-label on the entire container
• Although the contents of the button can be customized, including the product title and price covers the basic details of the channel-generated buy buttons with isButton set to true

To 🎩 :

• Create a buy button where isButton is set to true
• Verify that the visually hidden text is not visible when the product is rendered in an iframe
• Navigate a virtual cursor to the buy button and verify that the product title and price is announced
• Verify that a buttonDestination of modal, cart, and checkout all have the appropriate aria-label on the button
• Verify the visually hidden text is not present in the DOM when isButton is set to false

Browsers:

• Safari - Mac - VoiceOver
• Firefox - Windows