refactor: toggle theme on DOM load (#559)

Author: alexbarnsley

resources/views/scripts/dark-theme-script.blade.php

@@ -59,5 +59,9 @@
          * @return {string}
          */
         window.getThemeMode = () => _theme;
+
+        document.addEventListener("DOMContentLoaded", () => {
+            toggleTheme();
+        });
     </script>
 @endif