`ForcePlate::autodetectNoiseThresholdAndClip` segfaults on sample AddBiomechanics data

[nickbianco]

Example data provided by Jade He:
jade_test_original.zip

Processing the above data crashes here:

nimblephysics/dart/biomechanics/ForcePlate.cpp

Line 15 in 1ac0ecf

void ForcePlate::autodetectNoiseThresholdAndClip(