Clear pending queue before stopping on 404

When flush receives a 404, stop() would re-flush remaining
pending cookies to a dead endpoint. Clear the queue first to
avoid the wasted request.

Signed-off-by: Émile Ré <emile@getprobo.com>

packages/cookie-banner/src/detector.ts

@@ -143,6 +143,7 @@ export class CookieDetector {
       body: { cookies: entries },
     }).catch((err) => {
       if (err instanceof NotFoundError) {
+        this.pending.clear();
         this.stop();
       }
     });