fix component list in EntityDescriptor

Sia/Entities/EntityDescriptor.cs

@@ -3,7 +3,6 @@
 using System.Collections.Frozen;
 using System.Collections.Immutable;
 using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
 
 public record struct ComponentInfo(Type Type, IntPtr Offset);
 
@@ -24,11 +23,7 @@ public readonly void Handle<T>(ref T value)
             if (!offsets.TryAdd(typeof(T), offset)) {
                 throw new InvalidDataException("Entity cannot have multiple components of the same type");
             }
-            var index = EntityComponentIndexer<TEntity, T>.Index;
-            if (index >= components.Count) {
-                CollectionsMarshal.SetCount(components, index + 1);
-            }
-            components[index] = new(typeof(T), offset);
+            components.Add(new(typeof(T), offset));
         }
     }