streamStatus accidentals inconsistencies

[jacobtylerwalls]

music21 version

9.2.0b2

Problem summary
Accidentals are remade on streams that users may have already made accidentals for instead of short-circuiting. Discovered responding to #1667.

Steps to reproduce

n = note.Note()
n.pitch.accidental = pitch.Accidental('flat')
n.pitch.accidental.displayType = 'never'
n.show()

Expected vs. actual behavior
Expected: no accidental
Actual: accidental

More information
PartExporter.fixupNotationMeasured() checks haveAccidentalsBeenMade():

music21/music21/musicxml/m21ToXml.py

Line 2866 in a938a8c

if not part.streamStatus.haveAccidentalsBeenMade():

But makeAccidentals sets the property instead:

music21/music21/stream/makeNotation.py

Lines 1739 to 1740 in a938a8c

	if isinstance(s, Stream):
	s.streamStatus.accidentals = True

But even PartExporter.fixupNotationMeasured() is probably too late, given that fromGeneralObject() runs first, runs makeNotation, and neither streamStatus.accidentals nor streamStatus.haveAccidentalsBeenMade() is checked.