How do you disable notifications for system apps on Android 14?

I have a device running on Android 14. There is the "Codec status" app, which is a system app. I want to disable its notifications, but the "Show notifications" toggle is greyed out. I've searched around a bit, but the only answers I could find were for older versions of Android that don't really work anymore or require root access, which I would like to avoid, given that I like having a warranty. How do you disable notifications for system apps on Android 14?