Use proper HTML lists

[mgifford]

Describe the bug

This is broken HTML:
<ol><div class="dc-search-list-item">

http://demo.getdkan.org/search/

If you're going to use a list then it should be a list element and not a div. Div's should only be for things with no semantic meaning.

Discovered using MS's https://accessibilityinsights.io/ (which uses Axe):
AutomatedChecks_20201113_SearchDKANDemo.html.zip

Steps To Reproduce

Run Accessibility Insights on search page.

Expected behavior

We should be able to replicate Drupal's search results. We've looked that over for accessibility.

[dgading]

Fixed in data-catalog-components