Fix toggable fieldset specs for work_packages#index for now

spec/features/accessibility/work_packages/index_toggable_fieldsets_spec.rb

@@ -42,6 +42,10 @@ describe 'Work package index' do
       work_packages_page.visit_index
     end
 
+    before :each do
+      work_packages_page.click_toolbar_button 'Filter'
+    end
+
     describe 'Filter fieldset', js: true do
       it_behaves_like 'toggable fieldset initially expanded' do
         let(:fieldset_name) { 'Add filter' }

spec/features/work_packages/work_packages_page.rb

@@ -50,6 +50,10 @@ class WorkPackagesPage
     find('#main-menu .work-packages').click
   end
 
+  def click_toolbar_button(button)
+    find('.toolbar-container').click_button button
+  end
+
   def select_query(query)
     visit query_path(query);
   end