[API] Clones that are not added to score cause application crash on quit

Issue type

Crash or freeze

Description with steps to reproduce

Consider this simple plugin:

import QtQuick
import MuseScore 3.0

MuseScore {
    title: "clone clone"
    onRun: {
        curScore.startCmd("clone clone")
        for (var i in curScore.selection.elements) {
            if (curScore.selection.elements[i].type == Element.NOTE) {
                curScore.selection.elements[i].parent.add(curScore.selection.elements[i].clone().clone())
            }
        }
        curScore.endCmd()
    }
}

Running it works as expected: selected notes are duplicated and added to the score.
However, when closing the application (not the score) a crash is observed:
The last function called is ~ScoreElement (defined in engraving/api/v1/scoreelement.cpp)

Supporting files, videos and screenshots

cloneclone.qml.txt

What is the latest version of MuseScore Studio where this issue is present?

master

Regression

I was unable to check

Operating system

Windows 10

Additional context

Root cause of #28648

Checklist

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• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible