As a follow up of T326641, there are some small enhancement that can be made to the accessibility implementation of the Search Preview:
- make the extra sections (the one hidden below the 3 lines that we currently show) not tabbable
- make the extra commons images (the one hidden below the 2 lines ) not tabbable
- Add a type to the Aria button (in app.vue)
- Allow mouse click on the quickView-aria-button
More details in the comments on this patch https://gerrit.wikimedia.org/r/c/mediawiki/extensions/SearchVue/+/880926