Fix Realsense Camera Resolution

[hello-fazil]

Description

Due to updates in librealsense and the camera firmware, some of the RealSense camera parameters have changed (see more details here). This PR brings the web teleop interface up-to-date with these changes.

NOTE: This PR requires the one-line change from here. Until that is merged in, I'd suggest modifying building realsense_ros from source and manually adding that change.

Testing

• [x] On a "new" Stretch (e.g., D405 firmware 5.12.14.100, librealsense v2.55.1, realsense_ros on this commit), verify that this PR addresses the bug:
  • [x] Pull the master branch of this repo. Rebuild. Launch the web app (i.e., colcon_cd stretch_web_teleop; ./launch_interface.sh). Verify that the gripper RGB image is zoomed in (e.g., the gripper is not visible in the rendered image).
  • [x] To double-check, run ros2 topic echo /gripper_camera/image_raw | grep width. Verify that it is 848.
  • [x] Pull this branch (bugfix/multi_camera_launch). Rebuild. Launch the web app. Verify that the gripper RGB image is not zoomed in (e.g., the gripper is visible in the rendered image).
  • [x] To double-check, run ros2 topic echo /gripper_camera/image_raw | grep width. Verify that it is 480.
• [x] On an old Stretch (e.g., one that doesn't have the bug), verify that this PR doesn't break anything:
  • [x] Pull this branch (bugfix/multi_camera_launch). Rebuild. Launch the web app. Verify that the gripper RGB image is not zoomed in (e.g., the gripper is visible in the rendered image).
  • [x] To double-check, run ros2 topic echo /gripper_camera/image_raw | grep width. Verify that it is 480.

[hello-amal]

@hello-vinitha This PR is now ready for review. Can you test this on your Stretch, which didn't have the bug, to verify that it doesn't break anything?