Fix broken tests

app/views/layouts/_search.html.haml

@@ -14,7 +14,7 @@
       .search-input-wrap
         .dropdown{ data: { url: search_autocomplete_path } }
           = search_field_tag 'search', nil, placeholder: 'Search', class: 'search-input dropdown-menu-toggle no-outline js-search-dashboard-options', spellcheck: false, tabindex: '1', autocomplete: 'off', data: { issues_path: issues_dashboard_url, mr_path: merge_requests_dashboard_url }, aria: { label: 'Search' }
-          %button.hidden.js-dropdown-search-toggle{ data: { toggle: 'dropdown' }}
+          %button.hidden.js-dropdown-search-toggle{ type: 'button', data: { toggle: 'dropdown' } }
           .dropdown-menu.dropdown-select
             = dropdown_content do
               %ul