Use non-secure display for Android 12 preview

Android 12 preview identifies as Android 11, but its codename is "S".

Refs #2129 <https://github.com/Genymobile/scrcpy/issues/2129>

server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java

@@ -226,8 +226,10 @@ public class ScreenEncoder implements Device.RotationListener {
     }
 
     private static IBinder createDisplay() {
-        // Since Android 12, secure displays could not be created with shell permissions anymore
-        boolean secure = Build.VERSION.SDK_INT <= Build.VERSION_CODES.R;
+        // Since Android 12 (preview), secure displays could not be created with shell permissions anymore.
+        // On Android 12 preview, SDK_INT is still R (not S), but CODENAME is "S".
+        boolean secure = Build.VERSION.SDK_INT < Build.VERSION_CODES.R || (Build.VERSION.SDK_INT == Build.VERSION_CODES.R && !"S"
+                .equals(Build.VERSION.CODENAME));
         return SurfaceControl.createDisplay("scrcpy", secure);
     }