Moving a neume to a new staff causes it to stick to the top

## Describe the bug
Moving a neume to any staff below its current staff that is not the one right below it causes the neumes to stick to the top.

~~This weird behaviour does not happen if you move the neume to a staff above rather than below.~~
EDIT: this stickiness to the top happens when you move a neume to a staff above it... but it has to be a staff somewhat far above it.

From what I have discovered while trying to work on #864 , this is due to how neumes get moved: the pitch is calculated according to its original staff, and since the neume is so far away from the original clef, its pitch is unknown (there seems to be a minimum octave?)

## To reproduce

Try moving syllables / neumes to another staff below (not the one right below it) and the neumes will always stick to the top.

## Expected behavior
The neume should be placed where the user dropped it.

## Screenshots or Videos
https://user-images.githubusercontent.com/40512164/174880230-0de58e07-9381-4a7a-a721-17ddd526d1e0.mov