Your manager is unknowingly helping you create a form of job security for yourself, with all the technical debt and bugs being accumulated.
He might not understand it, and it might not be the type of work you want to do, but someone is going to have to fix those issues. And the longer they wait, the bigger the task gets.
But we still hold good cards in hand.
Do they want their pile of steaming slop fixed, or not? Because no amount of complaints about the deadline being "yesterday" are going to change anything about the fact that time will be needed to fix the accrued technical debt, whether they like it or not.. And if AI dug you in that deep to start with, the solution is not to dig deeper.
I suspect some companies are going to find that out the hard (costly) way.
If manage is reasonable, you can explain to them that there isn't time to check the work of the AI, and that it frequently makes obscure mistakes that need to be properly checked, and that takes time.
At this point, if they still insist you just give it the AI's work, they've made a decision that is their fault. You've done what you can.
And when the shit hits the fan, we're back to whether they're reasonable or not. If they are, you explained what could happen and it did. If they force responsibility on you, they aren't reasonable and were never going to listen to you. That time bomb was always going to go off.