fix(images): Fix images types and add missing card exports

[diogomateus]

What this PR does

This PR removes as const from image assets as they are breaking private-signup. This still allows autocompletion from types and we can still use IllustrationKeys types.

This PR also adds missing cards exports.

Checklist:

• I reviewed my own code
• The changes align with the designs I received
  Or give a reason why this does not apply:
• I have attached screenshot(s), video(s) or gif(s) showing that the solution is working as expected
  Or give a reason why this does not apply:
• I have updated the task(s) status on Linear
• All new media is optimized (images, gifs, videos)

Browser support

My code works in the following browsers:

• Firefox
• Chrome
• Safari
• Edge