Gtk4 DND setting selected action to Gdk.DragAction.ASK not reflected in drag icon
When the preferred action selected by the drop target is COPY, MOVE or LINK the emblem on the drag icon changes accordingly. However, when it is Gdk.DragAction.ASK, there is no matching emblem. In Gtk3 a question mark emblem was used.
When the preferred action is Gdk.DragAction.ASK, the drag icon should automatically indicate to the user that a dialog will appear on dropping.