Prevent equipping HandVirtualItems (#5982)

Content.Client/Hands/Systems/HandVirtualItemSystem.cs

@@ -1,4 +1,5 @@
 using Content.Client.Items;
+using Content.Shared.Hands;
 using Content.Shared.Hands.Components;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
@@ -6,7 +7,7 @@ using Robust.Shared.GameObjects;
 namespace Content.Client.Hands.Systems
 {
     [UsedImplicitly]
-    public sealed class HandVirtualItemSystem : EntitySystem
+    public sealed class HandVirtualItemSystem : SharedHandVirtualItemSystem
     {
         public override void Initialize()
         {

Content.Server/Hands/Systems/HandVirtualItemSystem.cs

@@ -8,7 +8,7 @@ using Robust.Shared.GameObjects;
 namespace Content.Server.Hands.Systems
 {
     [UsedImplicitly]
-    public sealed class HandVirtualItemSystem : EntitySystem
+    public sealed class HandVirtualItemSystem : SharedHandVirtualItemSystem
     {
         public override void Initialize()
         {

Content.Shared/Hands/SharedHandVirtualItemSystem.cs

@@ -0,0 +1,20 @@
+using Content.Shared.Hands.Components;
+using Content.Shared.Inventory.Events;
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.Hands;
+
+public abstract class SharedHandVirtualItemSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<HandVirtualItemComponent, BeingEquippedAttemptEvent>(OnBeingEquippedAttempt);
+    }
+
+    private void OnBeingEquippedAttempt(EntityUid uid, HandVirtualItemComponent component, BeingEquippedAttemptEvent args)
+    {
+        args.Cancel();
+    }
+}