Ajax working for links
requested to merge issue/better_exposed_filters-2938761:2938761-link-with-hidden-form-input into 8.x-5.x
Closes #2938761
Solution is based off https://www.drupal.org/project/better_exposed_filters/issues/2938761#comment-13261565
I couldn't set the class "selected" on the link using backend code, the solution is setting the class using JS.