We see her in human form, but it’s not apparent that she revoked her wish. We never saw her transform into Cheetah, so I read it as she can turn it on-and-off. She literally had just told Diana that she’d never revoke her wish.
In the interim from 1984 to today, I suspect Barbara is still out there—cursed/blessed with Amazonian eternal life & strength. Just as the Monkey’s Paw foretold, it takes as much as it gives. So, over the years, Barbara can no longer switch off her beast form and is stuck as, what she sees as, a monster.
She wanted people to see her, but now they stare.
It’d thus set up a return for Cheetah in WW3 as a villain, but also a potential uneasy ally. It allows Diana a chance to save her friend and undo one of her greatest failures.
Tie it in with Diana needing to find Themiscrya (and using the Purple Ray on Barbara).