Use item status extension method (#23884)

Just removes some lines of code.

Content.Client/Items/ItemStatusMessages.cs

@@ -2,27 +2,51 @@
 
 namespace Content.Client.Items
 {
+    /// <summary>
+    /// Raised by the HUD logic to collect item status controls for a held entity.
+    /// </summary>
+    /// <remarks>
+    /// Handlers should add any controls they want to add to <see cref="Controls"/>.
+    /// </remarks>
+    /// <seealso cref="ItemStatusRegisterExt"/>
     public sealed class ItemStatusCollectMessage : EntityEventArgs
     {
+        /// <summary>
+        /// A list of controls that will be displayed on the HUD. Handlers should add their controls here.
+        /// </summary>
         public List<Control> Controls = new();
     }
 
+    /// <summary>
+    /// Extension methods for registering item status controls.
+    /// </summary>
+    /// <seealso cref="ItemStatusCollectMessage"/>
     public static class ItemStatusRegisterExt
     {
         /// <summary>
         /// Register an item status control for a component.
         /// </summary>
+        /// <remarks>
+        /// This is a convenience wrapper around <see cref="ItemStatusCollectMessage"/>.
+        /// </remarks>
         /// <param name="subs">The <see cref="EntitySystem.Subs"/> handle from within entity system initialize.</param>
-        /// <param name="createControl">A delegate to create the actual control.</param>
+        /// <param name="createControl">
+        /// A delegate to create the actual control.
+        /// If the delegate returns null, no control will be added to the item status.
+        /// </param>
         /// <typeparam name="TComp">The type of component for which this control should be made.</typeparam>
         public static void ItemStatus<TComp>(
             this EntitySystem.Subscriptions subs,
-            Func<EntityUid, Control> createControl)
+            Func<Entity<TComp>, Control?> createControl)
             where TComp : IComponent
         {
-            subs.SubscribeLocalEvent<TComp, ItemStatusCollectMessage>((uid, _, args) =>
+            subs.SubscribeLocalEvent((Entity<TComp> entity, ref ItemStatusCollectMessage args) =>
             {
-                args.Controls.Add(createControl(uid));
+                var control = createControl(entity);
+                if (control == null)
+                    return;
+
+                args.Controls.Add(control);
             });
         }
     }