malfunctioning actuated trafficLight due to bad detector placement

[namdre]

There are two failure modes when the minDur is short relative to the detector position:

1. high flow failure:
   in a standing queue, no vehicle touches the detector. By the time the queue advances, the detector gap has been exceeded and the phase terminates

2. low flow failure
   the standing queue is fully between stop line and detector and there are no further vehicles. The minDur is too short to let all vehicles pass

[namdre]

detector position must be set to ensure that an upstream vehicle from can reach the detector minDuration from a standing queue.

[namdre]

Problem 1 is fixed, Problem 2 will be handled via #5127