iPhone 15 Silent Mode displays in Dynamic Island as either "On" or "Off, instead of "Ring" or "Silent"

I figured this one out by reviewing how the action button works. I had set the action button setting to Do Not Disturb. I didn't realize I was changing the action button setting by looking at the options. It's an odd way to manage a Settings option. Very confusing, and very unlike the straightforward way all the other settings are managed.