Fix missing implementation of virtual method

source/armarx/navigation/server/execution/DummyExecutor.h

@@ -30,6 +30,9 @@ namespace armarx::navigation::server
         void start(ControllerType controllerType) override{};
         void stop() override{};
 
+        void
+        ensureIsActive(ControllerType controllerType) override{};
+
 
     private:
         VirtualRobot::RobotPtr robot;