Warning displayed when launching the example "multirobot_launch.py" launch file

[MNikoliCC]

Describe the Bug
After starting the simulation from the example multirobot_launch.py launch file, the following warnings are displayed:

WARNING: Contact joints between materials 'default' and 'default' will only be created for the 10 deepest contact points instead of all the 12 contact points.
WARNING: The current physics step could not be computed correctly. Your world may be too complex. If this problem persists, try simplifying your bounding object(s), reducing the number of joints, or reducing WorldInfo.basicTimeStep.
WARNING: Irb4600-40 "abbirb4600" > Robotiq3fGripper "ROBOTIQ 3f Gripper" > HingeJoint "finger_1_link_0" > Solid "finger_1_link_0" > HingeJoint "finger_1_link_1" > RotationalMotor "finger_1_joint_1": too low requested position: 0.0494999 < 0.0495
WARNING: Irb4600-40 "abbirb4600" > Robotiq3fGripper "ROBOTIQ 3f Gripper" > HingeJoint "finger_2_link_0" > Solid "finger_2_link_0" > HingeJoint "finger_2_link_1" > RotationalMotor "finger_2_joint_1": too low requested position: 0.0494999 < 0.0495
WARNING: Irb4600-40 "abbirb4600" > Robotiq3fGripper "ROBOTIQ 3f Gripper" > Pose  > HingeJoint "finger_middle_link_1" > RotationalMotor "finger_middle_joint_1": too low requested position: 0.0494999 < 0.0495

The order of the warnings is not consistent.

Steps to Reproduce

1. Launch the example launch file with the command: ros2 launch webots_ros2_universal_robot multirobot_launch.py.
2. Start the simulation.
3. The warnings should appear.
4. If some warnings doesn't appear, restart the simulation.

Expected behavior
No warnings when starting the example simulation.

System

• Webots Version: R2023b
• ROS Version: ROS2 Humble
• Operating System: Ubuntu 22.04
• Graphics Card: RENOIR (renoir, LLVM 15.0.7, DRM 3.57, 6.8.0-49-generic)

Aditional information
The link for the page where the example launch file is:
https://github.com/cyberbotics/webots_ros2/wiki/Getting-Started