Fix makeAccidentals regression involving cautionaryPitchClass and chords

[jacobtylerwalls]

Before, octaves in chords could receive superfluous accidentals if cautionaryPitchClass was true (default).

190 was incorrectly ported from python: I suppose I wasn't sure if m21j had pitchClass defined, but it does, so I should have just used that as the python implementation (cuthbertLab/music21#1323) does.