Fix #31724: Double notehead when adding to Laissez Vibrer note

[pombcoraft]

Resolves: #31724

This fix changes the put_note action by excluding notes with a Laissez Vibrer tie, when the function checks whether a new note should be added as tied and when a new note is added to a chord by pitch. After this change, when a new note is added to another with a Laissez Vibrer, a single notehead is added, without any tie.

This commit also adds a unit test to confirm that a double notehead wasn't created.

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