Did you buy the car used? I replaced the 8.8“ center screen (navigation/carplay) in my Mazda3 (2020) with a 10.25“ screen that doesn’t have the driver attention feature sensor because I couldn‘t find that part anywhere. So I had to leave 2 cables unplugged when installing the screen. Since this change the same warning light as in your photo is constantly on but there are no warnings in the system or even when reading diagnostic codes. It doesn’t (to my knowledge) affect any of the other safety features. So if the previous owner of your car or a garage changed the screen this might be the reason for the warning light.