core: add darkreader-lock (#13183)

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

authentik/core/templates/base/skeleton.html

@@ -8,6 +8,8 @@
     <head>
         <meta charset="UTF-8">
         <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
+        {# Darkreader breaks the site regardless of theme as its not compatible with webcomponents, and we default to a dark theme based on preferred colour-scheme #}
+        <meta name="darkreader-lock">
         <title>{% block title %}{% trans title|default:brand.branding_title %}{% endblock %}</title>
         <link rel="icon" href="{{ brand.branding_favicon_url }}">
         <link rel="shortcut icon" href="{{ brand.branding_favicon_url }}">