Use continuum in detectorMap adjustment whenever possible

PIPE2D-1066 introduced the doForceTraces option, which has the code centroid on continuum and use those centroids as part of the detectorMap adjustment. However, this option needs to be activated explicitly, whereas we should default to using all information we can.

Change the default for this parameter, and check that it doesn't break anything (what happens when there's a lack of continuum?).