9.8 is already EOM and will be End of life as well in next 6 months.
IMO, it is hard to imagine SAG spending time on new features for a version that will be out of support in 6 months. You can create a Brainstorm ticket requesting this feature in future version of the product and they might consider it. If you don’t have the luxury of an upgrade then write some custom code in a Java service using the JJWT library to generate the tokens.
#Integration-Server-and-ESB#webMethods