These 2 fields don't exist as per the documentation and can't be found in the Lambda console's event template and the output of sam local generate-event alb request.
See:
https://github.com/awslabs/aws-lambda-rust-runtime/blob/f69280e9b92e9a7acc92cfa04a860d9b2b83b5c0/lambda-events/src/event/alb/mod.rs#L14-L28