Sort of, but she gave most people realistic names, it’s only with people further outside the central narrative that gets weird, and it goes further than just the name. I referred to my made-up character as ‘European’ and used common Spanish and Italian last names, which would be weird, but fine by itself. However, imagine if they were the ONLY white character in the entire book, and JK only wrote about how “Lombardi loved pasta and naps” as their main characteristics.
Cho Chang is a popular and smart girl who struggles with always listening to her parents, but suddenly becomes dumb around Harry because “she can’t focus around him”. She’s basically just a ManicPixieDreamGirl for Harry to have emotions about.
So, it’s not just about the name, it’s how the character is treated overall, and the way she’s treated is as a generic Asian romantic interest stereotype with a made-up name.