simplifyMultipleEnharmonics gives different spellings in different octaves

[cooijmanstim]

music21 version

9.1.0

Problem summary

Spelling of pitches by simplifyMultipleEnharmonics appears to change depending on octave.

Steps to reproduce

Here's what simplifyMultipleEnharmonics gives for f#0, f#1, ..., f#9 in the key of A minor.

ipdb> for i in range(10): music21.pitch.simplifyMultipleEnharmonics([f"f#{i}"],keyContext=music21.key.Key("Am"))
[<music21.pitch.Pitch G-0>]
[<music21.pitch.Pitch G-1>]
[<music21.pitch.Pitch G-2>]
[<music21.pitch.Pitch G-3>]
[<music21.pitch.Pitch F#4>]
[<music21.pitch.Pitch F#5>]
[<music21.pitch.Pitch F#6>]
[<music21.pitch.Pitch F#7>]
[<music21.pitch.Pitch F#8>]
[<music21.pitch.Pitch F#9>]

Expected vs. actual behavior

I believe this should be F# regardless of octave.