[BUG]Promo code input does show error message in V3

[alexvuong]

Summary

Short summary of what is going on or to provide context.
Promo code input submission in V3 does not work as expected

Steps To Reproduce

• Visit https://pwa-kit.mobify-storefront.com/
• Add an item to cart
• Go to Cart
• Open promo code accordion
• Input an invalid promo code
• Click Apply, the accordion does not show error message for invalid code

Expected result

Describe what should have happened.

• Successfull toast will show up if promo code is valid
• Error will show below the input and the accordion will not close
  

Actual result

Describe what actually happened.
Promo Code accordion will close and not show any error message

promo.mov

System Information (as applicable)

Browser: Chrome
Node version:
pwa-kit version: v3.x
Desktop OS:
Mobile Device Info:

Additional information

Feel free to attach a screenshot.

[git2gus]

This issue has been linked to a new work item: W-15226710