Update to new on_init API

[saikishor]

This updates the on_init API to the updated one and this is compatible with the rolling version of the ros2_control package.

[saikishor]

I thought you were not using pre-conmit. Perfect. I'll update it. I don't get why the other check fails

[eholum-nasa]

Thanks so much for these updates, @saikishor! This was on the back burner so appreciate you taking it on...

I don't get why the other check fails

Ah sorry, this is a branch naming issue. We use the branch name to uniquely identify docker images that are built in CI and it doesn't like /, as it's an invalid image name. I had a long term goal of actually pushing and saving images but for now it doesn't even really matter. Pixi builds are fine and it runs fine for me so I'll do a quick sanity check and just merge past it!

/usr/bin/docker buildx build --build-arg ROS_DISTRO=jazzy --file docker/Dockerfile --iidfile /home/runner/work/_temp/docker-actions-toolkit-6Go0da/build-iidfile-5b3ded6a0a.txt --secret id=GIT_AUTH_TOKEN,src=/home/runner/work/_temp/docker-actions-toolkit-6Go0da/tmp-2599-IMyNfj4HRnoS --tag mujoco_ros2_simulation:update/system_interface/API --target mujoco_ros --load --metadata-file /home/runner/work/_temp/docker-actions-toolkit-6Go0da/build-metadata-168882991b.json https://github.com/NASA-JSC-Robotics/mujoco_ros2_simulation.git#refs/pull/36/merge
ERROR: failed to build: invalid tag "mujoco_ros2_simulation:update/system_interface/API": invalid reference format
Error: buildx failed with: ERROR: failed to build: invalid tag "mujoco_ros2_simulation:update/system_interface/API": invalid reference format

[saikishor]

@eholum-nasa thanks for letting me know. Then, I'll create the other upcoming PRs without /. Thank you

[eholum-nasa]

LGTM!