Pagination - Recommended markup uses `separator` ARIA role in invalid location

[JoshTumath]

The GEL Technical Docs recommend the following markup for the pagination:

https://bbc.github.io/gel/components/load-more/#the-pagination-component

  <ol class="gel-pages-numbered">
    <li><a href="?page=1" aria-current="page">1</a></li>
    <li><a href="?page=2">2</a></li>
    <li><a href="?page=3">3</a></li>
    <li><a href="?page=4">4</a></li>
    <li><a href="?page=5">5</a></li>
    <li><a href="?page=6">6</a></li>
    <li><a href="?page=7">7</a></li>
    <li role="separator">&hellip;</li>
    <li><a href="?page=999">999</a></li>
  </ol>

It says the list item in the pagination with the ellipsis ('...') needs to be in a separator role, but changing a list item role to a separator is not allowed, so it gets flagged as invalid markup in tools like the axe automated a11y tests.

Can we change the technical docs to stop recommending that? And what would be an appropriate alternative?

[JoshTumath]

I've created a PR in the WebCore Design System to just rely on the ellipsis character to convey the information we want to screen reader users. https://github.com/bbc/web/pull/17618