LibWeb: Make DOMException GC-allocated

Author: https://github.com/awesomekling
Commit: 497ead37bc
Pull-request: https://github.com/SerenityOS/serenity/pull/14816
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibWeb/HTML/Worker.cpp

@@ -65,7 +65,7 @@ DOM::ExceptionOr<JS::NonnullGCPtr<Worker>> Worker::create(FlyString const& scrip
     // 4. If this fails, throw a "SyntaxError" DOMException.
     if (!url.is_valid()) {
         dbgln_if(WEB_WORKER_DEBUG, "WebWorker: Invalid URL loaded '{}'.", script_url);
-        return DOM::SyntaxError::create("url is not valid");
+        return DOM::SyntaxError::create(document.global_object(), "url is not valid");
     }
 
     // 5. Let worker URL be the resulting URL record.