Hladik It seems likely that the reason for this is not related to GrapheneOS. You may have revoked the network permission for Google Camera/Google Photos which seems to be causing issues for people even on Stock OS. If you're comfortable with it, I would recommend at least temporarily enabling network for the apps (maybe even GSF although that shouldn't be needed) and give it some time.
For more information: https://piunikaweb.com/2022/10/17/pixel-7-7-pro-unblur-magic-eraser-missing-from-google-photos/