LEDs are not turned off after ROS stack shuts down

[sskorol]

LED node resources aren't correctly released on ROS node shutdown.

Steps:

• run luxonis/rae-ros-robot:humble
• run bringup.launch.py
• press ctrl + c when nodes are started

Expected: LEDs are turned off.
Actual: LEDs remain active.

[sskorol]

Seems like there's the same issue with LCD node. The progress bar remains on the screen after shutdown.
Also, note that LEDs state persists even after reboot.

[sskorol]

Another observation: sometimes it correctly releases resources. So, we need to wait for some processes to finish before shutting down the nodes.

[danilo-pejovic]

I cant replicate LEDs staying on - but screen does show battery even after turned on. That shouldn't be too hard to fix up - thanks for reporting.