Prevent warning spam to console when dragging a CanvasItem in container
Prevent warning spam to console when dragging a CanvasItem in container

(cherry picked from commit bb5729fd352619356a2d0eae1148a4fe13aeb174)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot