message: Fix franka_visualization launch file
diff: <param if="$(arg load_gripper)" name="robot_description" command="$(find xacro)/xacro --inorder '$(find franka_description)/robots/panda_arm_hand.urdf.xacro'" />
  <param unless="$(arg load_gripper)" name="robot_description" command="$(find xacro)/xacro --inorder '$(find franka_description)/robots/panda_arm.urdf.xacro'" />
  <param name="rate" value="$(arg publish_rate)" />
  - <rosparam param="source_list">[franka_joint_state_publisher/joint_states, franka_gripper_state_publisher/joint_states]</rosparam>
  + <rosparam param="source_list">[robot_joint_state_publisher/joint_states, gripper_joint_state_publisher/joint_states]</rosparam>
  </node>
  <node name="robot_state_publisher" pkg="robot_state_publisher" type="state_publisher" />
  