Fix drag-drop stripping (#3001)

* Fix drag-drop stripping

* More robust

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Shared/GameObjects/Components/GUI/SharedStrippingComponent.cs

@@ -0,0 +1,27 @@
+#nullable enable
+using Content.Shared.Interfaces.GameObjects.Components;
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.GameObjects.Components.GUI
+{
+    /// <summary>
+    ///     Give to an entity to say they can strip another entity.
+    /// </summary>
+    [RegisterComponent]
+    public class SharedStrippingComponent : Component, IDragDropOn
+    {
+        public override string Name => "Stripping";
+
+        public bool CanDragDropOn(DragDropEventArgs eventArgs)
+        {
+            if (!eventArgs.Dragged.TryGetComponent(out SharedStrippableComponent? strippable)) return false;
+            return strippable.CanBeStripped(Owner);
+        }
+
+        public bool DragDropOn(DragDropEventArgs eventArgs)
+        {
+            // Handled by StrippableComponent
+            return true;
+        }
+    }
+}