add custom invitation reminder emails

app/views/templates_preferences/show.html.erb

@@ -101,6 +101,7 @@
           <%= render 'templates_preferences/submitter_invitation_email_form' %>
         </div>
       </div>
+      <%= render 'templates_preferences/submitter_invitation_reminder_email_collapse' %>
       <div class="collapse collapse-arrow join-item border border-base-300">
         <input type="checkbox" name="accordion">
         <div class="collapse-title text-xl font-medium">