Nothing of the sort would come in GrapheneOS. It's an opt-in by using stock apps for some features, but more invasive ones that are privileged like circle to search don't exist at all.

A lot of the AI use is quite limited in practice and are instead just features of stock OS apps being marketed as AI. You can get the photo editing features they market as AI like Magic Eraser by installing Google Photos on GrapheneOS with Play services. A lot of generic Google app AI features aren't even on-device but done over the cloud.

There's nothing for us to fix because we can't disable what doesn't exist here. The only functionality that's included in GrapheneOS is hardware acceleration for image processing, neural nets, etc. which we make use of. We provide HDR+ and Night mode the Camera app with it. We had to make new Camera app a long time ago just to get them, because the AOSP camera didn't have it.

That Pixel Screenshots feature appears to just be a feature to search text within and metadata of screenshots, iPhone had that for a while but didn't give it the AI push like Google did. That wouldn't be in GrapheneOS because our apps do not have any feature like that. If it has privileged/invasive access then it would probably never even be considered even if we could.