added info to aid static analysis

Signed-off-by: Elizabeth Danzberger <lizzy7128@tutanota.de>

lib/Listener/LoadAdditionalListener.php

@@ -8,6 +8,7 @@
 use OCP\EventDispatcher\IEventListener;
 use OCP\Util;
 
+/** @template-implements IEventListener<LoadAdditionalScriptsEvent> */
 class LoadAdditionalListener implements IEventListener {
     public function handle(Event $event): void {
         if (!($event instanceof LoadAdditionalScriptsEvent)) {