Merge branch 'qa-improve-content-editor-spec' into 'master'

Fix flaky content_editor_spec

See merge request gitlab-org/gitlab!68514

qa/qa/page/component/wiki_page_form.rb

@@ -47,6 +47,7 @@ module QA
           within_element(:try_new_editor_container) do
             click_button('Use the new editor')
           end
+          has_element?(:content_editor_container)
         end
       end
     end