“Drags can only be started from MouseDown or MouseDrag events” error is thrown when registering the MouseDownEvent on a BlackboardField and calling DragAndDrop.PrepareStartDrag() and DragAndDrop.StartDrag()

Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/ASSET WITH BUG.asset” asset
3. Create a new variable on the blackboard (Click + sign > MyCustomVariable)
4. Try to drag and drop the “New variable” on the graph
5. Observe the Console window

Expected result: No errors are thrown
Actual result: “Drags can only be started from MouseDown or MouseDrag events” error is thrown

Reproducible with: 2021.3.44f1, 2022.3.52f1, 6000.0.26f1, 6000.1.0a2

Reproducible on: Windows 11
Not reproducible on: No other environment tested