A11Y: topic list links should not be headings (#27700)

app/assets/javascripts/discourse/app/components/topic-list/topic-link.gjs

@@ -13,8 +13,6 @@ export default class TopicLink extends Component {
     <a
       href={{this.url}}
       data-topic-id={{@topic.id}}
-      role="heading"
-      aria-level="2"
       class="title"
       ...attributes
     >{{htmlSafe @topic.fancyTitle}}</a>

app/assets/javascripts/discourse/app/helpers/topic-link.js

@@ -17,8 +17,6 @@ export default function topicLink(topic, args = {}) {
 
   return htmlSafe(
     `<a href='${url}'
-        role='heading'
-        aria-level='2'
         class='${classes.join(" ")}'
         data-topic-id='${topic.id}'>${title}</a>`
   );