fix: removes unnecessary 'role' in <section ...> elements

[rglombov]

According to https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/region_role#prefer_html, it is not necessary to specify role to <section> elements.

[abiyasa]

As discussed on Slack with eBay Skin and accessibility team, we will keep both <section> and role-region even though it's redundant:

• This is aligned with eBay Skin Page & Section notice (see https://opensource.ebay.com/skin/#page-notice or https://opensource.ebay.com/skin/#section-title), and also eBay UI Core component (e.g ebay-section-notice) which eBay UI Core React is based on. We should not diverge from the official components for consistency (see eBay MIND pattern)
• This redundant was because the Platform team weren't completely sure if <section> is supported by AT in all scenarios. So, having a fallback with role=region helps us achieve that. Based on this table from a11ysupport.io, JAWS and Talkback still partially support <section> but this will change in the future

I am closing this ticket as won't fix/change.