Hi! I am working on a art portfolio using NextJS 14 and Page Router. I want to fetch illustrations and info from a Sanity project, but I am a little confused: in various tutorials, I see that NextJS 14 no longer uses getStaticProps, but when I try it out in my code it doesn't seem to work, so I am not sure if App Router is the one that doesn't use getStaticProps, which means that even if I am using NextJS 14, because I use Page Router I need to use getStaticProps. My question is: should I use getStaticProps or is there another way to fetch data form a headless CMS?