Updates various systems to the new InputCommandHandler delegate signature, implementing the new handled return value.

Modifies the construction system to use the newer InputHandler system, instead of the older ClickComponent system.
Updates the engine submodule.

Content.Client/GameObjects/EntitySystems/VerbSystem.cs

@@ -76,24 +76,24 @@ namespace Content.Client.GameObjects.EntitySystems
             _currentPopup.Open(box);
         }
 
-        private void OnOpenContextMenu(in PointerInputCmdHandler.PointerInputCmdArgs args)
+        private bool OnOpenContextMenu(in PointerInputCmdHandler.PointerInputCmdArgs args)
         {
             if (_currentPopup != null)
             {
                 _closeContextMenu();
-                return;
+                return true;
             }
 
             if (!(_stateManager.CurrentState is GameScreen gameScreen))
             {
-                return;
+                return false;
             }
 
             var entities = gameScreen.GetEntitiesUnderPosition(args.Coordinates);
 
             if (entities.Count == 0)
             {
-                return;
+                return false;
             }
 
             _currentPopup = new VerbPopup();
@@ -110,6 +110,8 @@ namespace Content.Client.GameObjects.EntitySystems
             var size = _currentPopup.List.CombinedMinimumSize;
             var box = UIBox2.FromDimensions(args.ScreenCoordinates.Position, size);
             _currentPopup.Open(box);
+
+            return true;
         }
 
         private void OnContextButtonPressed(IEntity entity)