feat: instant preview of edited email template

templates/admin/system/email_text/index.html.twig

@@ -59,13 +59,10 @@
                                         hx-swap="beforeend">
                                     {{ icon('eye') }}
                                 </button>
-                                <button type="button"
-                                        title="E-Mail-Text bearbeiten"
-                                        hx-get="{{ path('app_admin_system_email_text_edit', { 'key': key }) }}"
-                                        hx-target="body"
-                                        hx-swap="beforeend">
+                                <a href="{{ path('app_admin_system_email_text_edit', { 'key': key }) }}"
+                                   title="E-Mail-Text bearbeiten">
                                     {{ icon('edit') }}
-                                </button>
+                                </a>
                             </div>
                         </td>
                     </tr>