Photography captures a likeness. Generative production manufactures new ones, which is a different act and generally needs a different permission. A release drafted for the first does not usually authorise the second.
The exposure is not limited to deliberate use. A wholly synthetic face generated from a demographic description will occasionally land close to a real, identifiable person, particularly in a small market, and the legal position is much the same as if it had been intended.
The dull mitigation works: run a reverse image search on any synthetic identity before it enters production, and keep a written record that you did. It is ten minutes against a claim you cannot easily defend.
Does a photography release cover generative use of someone’s likeness?
Usually not. It grants use of captured material. Generating new material the person never performed is a distinct act, and the permission has to name it.
What if a synthetic face accidentally resembles a real person?
The exposure is broadly the same as if it were deliberate. Reverse image search the final identity before production and record the result.