This is exactly what I'm looking for, unfortunately it's only available on iOS 17. I need to support iOS 14 and later.

I'm looking for changes in interface orientation, which is not the same as the device orientation. (e.g. if you have rotation lock enabled the device orientation can change without changing the interface orientation. There are also a few device orientations that do not affect the interface orientation even if it's unlocked, such as .faceUp and .faceDown.