Third party apps can not be restricted access to the camera in iOS 26.1

We use Device Management Profile to restrict all apps from using camera on unsupervised devices. It works fine until iOS 26.1 beta. In iOS 26.1, only the camera icon is removed from Home screen, the third party apps can still use camera. In our scenario, the camera of employees' iPhones are disabled when they enter the factory and are restored when they leave. According to the documentation, disabling camera on unsupervised devices is deprecated. But supervision is not feasible option because these iPhones are owned personally by employees. Is there any new solution for camera restriction on unsupervised devices? Thanks.