Replace last added wait_for_vue_resource by wait_for_requests

spec/features/boards/add_issues_modal_spec.rb

@@ -36,7 +36,7 @@ describe 'Issue Boards add issue modal', :feature, :js do
 
   it 'shows weight filter' do
     click_button('Add issues')
-    wait_for_vue_resource
+    wait_for_requests
     find('.add-issues-search .filtered-search').click
 
     expect(page.find('.filter-dropdown')).to have_content 'weight'