fix: ensure loading indicator is triggered

templates/security/login.html.twig

@@ -11,7 +11,7 @@
                 {% include '_partials/_alert.html.twig' with { 'level': 'error', messages: [ error.messageKey|trans(error.messageData, 'security') ] } %}
             {% endif %}
             <div class="pb-4">
-                <form action="{{ path('app_login') }}" method="post" {{ stimulus_action('loading', 'toggle') }}>
+                <form action="{{ path('app_login') }}" method="post" {{ stimulus_action('loading', 'show') }}>
                     <div class="mb-4">
                         <label for="username" class="mb-1 font-semibold text-white">
                             E-Mail: