transition events don't populate transition id, label, or timestamp

[Aposhian]

Bug report

Required Info:

• Operating System:
  • N/A
• Installation type:
  • binaries
• Version or commit hash:
  • humble
• DDS implementation:
  • CycloneDDS
• Client library (if applicable):
  • N/A

Steps to reproduce issue

Not all the fields of lifecycle_msgs/msg/TransitionEvent are being utilized

ros2 topic echo /<node>/transition_event lifecycle_msgs/msg/TransitionEvent

Expected behavior

timestamp: 1668097069451777251
transition:
  id: 1
  label: configure
start_state:
  id: 1
  label: unconfigured
goal_state:
  id: 10
  label: configuring

Actual behavior

timestamp: 0
transition:
  id: 0
  label: ''
start_state:
  id: 1
  label: unconfigured
goal_state:
  id: 10
  label: configuring

Additional information

This matters for things like launch_ros.event_handlers.OnStateTransition which present an interface to match on transition, but which will fail every time.

[SuperJappie08]

This is still the case in Jazzy.