Use Props factory methods in getting started tutorial (#25713)

* Use Props factory methods in getting started tutorial

* deprecate Props.create without actorClass parameter, #25718

akka-docs/src/test/java/jdocs/tutorial_5/DeviceManager.java

@@ -18,7 +18,7 @@ public class DeviceManager extends AbstractActor {
   private final LoggingAdapter log = Logging.getLogger(getContext().getSystem(), this);
 
   public static Props props() {
-    return Props.create(DeviceManager.class);
+    return Props.create(DeviceManager.class, DeviceManager::new);
   }
 
   public static final class RequestTrackDevice {