TB4lite Sim with world:=maze starts with TB4 half inside obstacle

[slowrunner]

Please provide the following information:

• OS: Ubuntu 20.04
• ROS Distro: Galactic apt installed
• Package version:

  
  ubuntu@tb4desk:~/tb4desk$ dpkg -l | grep turtlebot
  ii  ros-galactic-turtlebot4-description                 0.1.2-1focal.20220916.170821          amd64        Turtlebot4 Description package
  ii  ros-galactic-turtlebot4-desktop                     0.1.0-1focal.20220916.172304          amd64        Turtlebot4 Desktop Metapackage
  ii  ros-galactic-turtlebot4-ignition-bringup            0.1.1-1focal.20221016.143037          amd64        TurtleBot 4 Ignition Simulator bringup
  ii  ros-galactic-turtlebot4-ignition-gui-plugins        0.1.1-1focal.20220509.183119          amd64        Turtlebot4 Ignition Simulator GUI Plugins
  ii  ros-galactic-turtlebot4-ignition-toolbox            0.1.1-1focal.20220916.171656          amd64        Turtlebot4 Ignition Toolbox
  ii  ros-galactic-turtlebot4-msgs                        0.1.2-1focal.20220916.170727          amd64        Turtlebot4 Messages
  ii  ros-galactic-turtlebot4-navigation                  0.1.2-1focal.20221016.142546          amd64        Turtlebot4 Navigation
  ii  ros-galactic-turtlebot4-node                        0.1.2-1focal.20220916.172120          amd64        Turtlebot4 Node
  ii  ros-galactic-turtlebot4-simulator                   0.1.1-1focal.20221016.143508          amd64        TODO: Package description
  ii  ros-galactic-turtlebot4-viz                         0.1.0-1focal.20220916.171830          amd64        Visualization launchers and helpers for Turtlebot4

 **Expected behaviour**
TB4lite to start docked in an unobstructed area of maze world

 **Actual behaviour**
 TB4lite is half embedded into maze obstacle

**To Reproduce**

1. ros2 launch turtlebot4_ignition_bringup ignition.launch.py model:=lite world:=maze

![TB4lite_Embedded_Maze](https://user-images.githubusercontent.com/8950202/201755958-4f44062f-f214-4bba-83df-a21a772617bd.jpg)

[slowrunner]

Work around for time being is to click on the obstacle and select remove. Then undock action will succeed.

Or work around that preserves the maze:

1) Shift Drag Mouse Down to be looking down on world 2) Cntrl scroll Mouse Down to zoom out a little 3) Click "Translate Mode" Button (4 dir arrow cross) 4) Click on TB4lite to see three colored axis line "handles" 5) Click-Drag on green "y axis" handle or red "x axis" handle to move TB4 to an open grid crossing 6) Click on dock to show x,y,z axis handles 7) Click-Drag on green "y axis" handle or red "x axis" handle to move dock close to the TB4 again 8) Click Select Mode: Use "Rotate View" (shift drag) and "Zoom View" (cntrl drag) to view dock and TB4lite from side 9) Click Translate Mode: Adjust dock to be under TB4lite 10) Hamburger Menu: "Save World", Browse to desired folder, enter: mymaze.sdf and click OK
11) Close Gazebo, ctrl-c in shell to stop nodes
12) chmod 666 mymaze.sdf 13) sudo cp mymaze.sdf /opt/ros/galactic/share/turtlebot4_ignition_bringup/worlds/ 14) Start sim with new model: ros2 launch turtlebot4_ignition_bringup ignition.launch.py model:=lite world:=mymaze 15) Shift Mouse Drag Down to be looking down on world, zoom out to view world 16) Hamburger: Save Client Configuration 17) Click "Play Button" to start sim 18) In another shell Check /dock status (ros2 topic echo /dock): "is_docked: true"