Describe the bug

Whilst working on #60253, I noticed that we have several templates used to create notices:

1. templates/notices/ are used to render legacy notices in classic themes.
2. templates/block-notices/ are used to render legacy notices in block themes.
3. BlockTypes/StoreNotices.php are the actual store notices blocks.

The latter of the three are missing any ARIA role attributes.

Expected behavior

Notices should have appropriate role attribute.

Actual behavior

role attributes are missing.

Steps to reproduce

1. Go to the checkout page.
2. Trigger an error.
3. Notice that role attribute is missing from the HTML.

Isolating the problem

• I have deactivated other plugins and confirmed this bug occurs when only WooCommerce plugin is active.
• This bug happens with a default WordPress theme active, or Storefront.
• I can reproduce this bug consistently using the steps above.