fix(drag-drop): unable to start dragging in list if dragged item is destroyed #19055
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We currently have some logic which cleans up the dragging state if the dragged item is destroyed, but nothing notifies the parent drop list which leaves it in the dragging state. Next time the user tries to drag, they won't be able to, because the list still thinks that its dragging. These changes add some logic to abort the dragging if the dragged item is removed from the list.
Fixes #18628.