Shuttle map IFF tweaks (#25897)

- HideLabel just means it won't have its name / button drawn whereas Hide will block it completely.

Content.Shared/Shuttles/UI/MapObjects/IMapObject.cs

@@ -6,4 +6,9 @@ namespace Content.Shared.Shuttles.UI.MapObjects;
 public interface IMapObject
 {
     string Name { get; }
+
+    /// <summary>
+    /// Should we hide the button from being shown (AKA just draw it).
+    /// </summary>
+    bool HideButton { get; }
 }