Add navigate() method to Navigator for navigating to the current location (#9442)

server/src/com/vaadin/navigator/Navigator.java

@@ -410,6 +410,15 @@ public class Navigator implements Serializable {
         this.stateManager = stateManager;
     }
 
+    /**
+     * Navigates to the current navigation state. This method should be called
+     * when all required {@link View}s, {@link ViewProvider}s, and
+     * {@link ViewChangeListener}s have been added to the navigator.
+     */
+    public void navigate() {
+        navigateTo(getStateManager().getState());
+    }
+
     /**
      * Navigate to a view and initialize the view with given parameters.
      *