Minor correction to kerning prevention logic

[oktophonie]

Issue type

Engraving bug

Bug description

An accidental on a higher note can kern above the preceding lower note where space allows (a)
When there is a slur from the preceding note, at the notehead side, this is prevented (b)
But it is not prevented if the slur is on the other side, as it's not necessary (c)

An accidental on a lower note can kern under the preceding higher note where space allows (d)
Kerning does not need to be prevented if there is a slur at the notehead side, and it isn't (e)
Nor does it need to be prevented if there's a slur on the other side - but it is being! (f)

Indeed, we never need to prevent kerning because of a slur at the stem side.

MuseScore Version

4.1

Regression

No.

Operating system

Linux