Merge branch '40642-members-tab-not-signed-in' into 'master'

Add project_members controller when not signed in

Closes #40642

See merge request gitlab-org/gitlab-ce!15659

app/views/layouts/nav/sidebar/_project.html.haml

@@ -266,7 +266,7 @@
                       Pages
 
       - else
-        = nav_link(path: %w[members#show]) do
+        = nav_link(controller: :project_members) do
           = link_to project_settings_members_path(@project), title: 'Members', class: 'shortcuts-tree' do
             .nav-icon-container
               = sprite_icon('users')