optimize the appicon of iOS

ios/OralTrainer/Views/RootView.swift

@@ -131,13 +131,25 @@ struct RootView: View {
 
     private func enterFullscreen() {
         AppDelegate.orientationLock = UIDevice.current.userInterfaceIdiom == .pad ? .all : .landscape
-        UIViewController.attemptRotationToDeviceOrientation()
+        updateSupportedInterfaceOrientations()
         showFullscreenPlayer = true
     }
 
     private func exitFullscreen() {
         AppDelegate.orientationLock = UIDevice.current.userInterfaceIdiom == .pad ? .all : .portrait
-        UIViewController.attemptRotationToDeviceOrientation()
+        updateSupportedInterfaceOrientations()
         showFullscreenPlayer = false
     }
+
+    private func updateSupportedInterfaceOrientations() {
+        let scenes = UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }
+        let controllers = scenes.flatMap { $0.windows }.compactMap(\.rootViewController)
+        for controller in controllers {
+            if #available(iOS 16.0, *) {
+                controller.setNeedsUpdateOfSupportedInterfaceOrientations()
+            } else {
+                UIViewController.attemptRotationToDeviceOrientation()
+            }
+        }
+    }
 }