Hello, there are no configurations that can be made for the userinfo and me endpoint currently. If you'd like these features to be implemented please submit feedback here : https://feedback.azure.com/forums/169401-azure-active-directory and if there's enough community support the product team will look into it and put it on the roadmap.
If you're having issues getting AWS ALB and AAD Auth working properly, I suggest filing a support ticket with Amazon to try to get further traction, as there is nothing that can be done to change what is returned from the userinfo/me endpoints currently.
It sounds like there's an issue with the AWS ALB OIDC configuration, I suggest trying to see if Amazon can relax the rules for sub. https://docs.aws.amazon.com/elasticloadbalancing/latest/application/listener-authenticate-users.html