Fix depth_image_octomap_updater porting error

[RoboticsYY]

Description

This PR intends to address the errors in depth_image_octomap_updater that were not covered in the porting PR #354.

Test the PR through the sample below:

• Build and enable depth image publishing by Realsense camera: https://github.com/IntelRealSense/realsense-ros/tree/foxy
• Build https://github.com/RoboticsYY/moveit_tutorials in the workspace and run the demo:

  ros2 launch moveit_tutorials obstacle_avoidance_demo.launch.py
  

Checklist

• Required by CI: Code is auto formatted using clang-format

[codecov]

Codecov Report

Merging #383 (ef31b0c) into main (8b1784f) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head ef31b0c differs from pull request most recent head 24edf15. Consider uploading reports for the commit 24edf15 to get more accurate results

@@            Coverage Diff             @@
##             main     #383      +/-   ##
==========================================
+ Coverage   53.21%   53.21%   +0.01%     
==========================================
  Files         209      209              
  Lines       18805    18805              
==========================================
+ Hits        10005    10006       +1     
+ Misses       8800     8799       -1     

Impacted Files	Coverage Δ
...nning_scene_monitor/src/planning_scene_monitor.cpp	56.15% <0.00%> (-0.15%)	⬇️
...meterization/work_space/pose_model_state_space.cpp	84.56% <0.00%> (+1.48%)	⬆️

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