Conditional logic in ACF is not a function of a specific field that conditions are based on. Conditional logic is a function of the fields that are conditional. There isn’t anything in the radio field that says “I can be used for conditional logic”
In order to add your field type to the fields that can be used for conditional logic you would need to alter the conditional logic section field that is available in all field types and you would need to build custom JavaScript to allow choosing your field. I can’t give you the details on this as I don’t know them. You’d need to dig through the ACF code to figure out if this is even possible.
