Update Events.php

@yurabakhtin Remove the `Controller` to avoid crashing if controllers extending `yii\rest\Controller`

Events.php

@@ -77,7 +77,7 @@ public static function onBeforeAction($event)
      * @param $controller Controller
      * @return bool
      */
-    protected static function isImpersonateAction(Controller $controller): bool
+    protected static function isImpersonateAction($controller): bool
     {
         return ($controller instanceof AdminUserController) &&
             isset($controller->action) &&