Remove context menu from drag shadows (#2262)

Content.Shared/GameObjects/Components/Drag/DragShadowComponent.cs

@@ -0,0 +1,17 @@
+using Content.Shared.GameObjects.Verbs;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+
+namespace Content.Shared.GameObjects.Components.Drag
+{
+    [RegisterComponent]
+    public class DragShadowComponent : Component, IShowContextMenu
+    {
+        public override string Name => "DragShadow";
+
+        public bool ShowContextMenu(IEntity examiner)
+        {
+            return false;
+        }
+    }
+}

Resources/Prototypes/Entities/Effects/Markers/drag_shadow.yml

@@ -6,3 +6,4 @@
     - type: Sprite
       layers:
         - shader: unshaded
+    - type: DragShadow