Cookies issue while embedding kibana dashboard with iFrame

Is there an option to set the parameters xpack.security.secureCookies: true and xpack.security.sameSiteCookies: None in the cloud hosted environment on https://www.elastic.co? It seems that these are still not supported there.
Can the cloud environment give us access to the server, and we can set the cookie parameters there, depending on the type of server, Nginx, etc?