updated setting of ros-args (#1120)

nav2_rviz_plugins/src/nav2_panel.cpp

@@ -103,7 +103,7 @@ Nav2Panel::Nav2Panel(QWidget * parent)
   setLayout(main_layout);
 
   auto options = rclcpp::NodeOptions().arguments(
-    {"__node:=navigation_dialog_action_client"});
+    {"--ros-args --remap __node:=navigation_dialog_action_client"});
   client_node_ = std::make_shared<rclcpp::Node>("_", options);
 
   action_client_ = rclcpp_action::create_client<nav2_msgs::action::NavigateToPose>(client_node_,