Supply ajax request headers

[Guite]

The edit in place as well as the web UI ajax requests are not using the header which Symfony's Request class is expecting.

My current workaround in a request listener looks like this:

    public function onKernelRequest(RequestEvent $event): void
    {
        $request = $event->getRequest();
        $routeName = $request->get('_route', '');

        if (in_array($routeName, ['translation_edit_in_place_update', 'translation_create', 'translation_edit', 'translation_delete'], true)) {
            // ensure $request->isXmlHttpRequest() returns true
            $request->headers->set('X-Requested-With', 'XMLHttpRequest');
        }
    }