resynchronize track displacement with heartbeat

[DoYouEvenStackSmash]

Any displacement, whether angular or linear, updates the latest detection for all active tracks to ensure predictions remain valid. It would be useful to know which state is associated with a displaced detection, either in output json or as some marker in an ObjectTrack

[DoYouEvenStackSmash]

This is somewhat implemented by a marker in the json but is not well documented or used for the single agent case.