LogicEditor | Drag and Drop can prevent delay from executing

If we have a drag and drop that triggers all the time and not only on release, the on-near-anchor-event is triggered with 30 fps. If this triggers the start of a delay node, the delay node will never run to completion, as a new start stops the current delay. To fix this problem we need to find a way to trigger the on-near-anchor-event only once.