引入 UISerializationRoot 和 Item

- 完成 MenuForm 和 SelectRoleForm 的迁移

Assets/GameMain/Scripts/Presentation/Main/LevelUp/LevelUpForm.cs

@@ -22,7 +22,6 @@ namespace SepCore.UI
                 propItem.gameObject.SetActive(false);
             }
 
-            if (_context.Props == null) return;
             int count = Mathf.Min(_propItems.Length, _context.Props.Count);
             for (int i = 0; i < count; i++)
             {
@@ -40,13 +39,13 @@ namespace SepCore.UI
         {
             base.OnOpen(userData);
 
-            if (userData is LevelUpContext context)
+            if (userData is not LevelUpContext context)
             {
-                RefreshUI(context);
+                Log.Error("LevelUpForm requires LevelUpContext as userData.");
                 return;
             }
 
-            Log.Warning("LevelUpForm requires LevelUpFormContext as userData.");
+            RefreshUI(context);
         }
 
         protected override void OnClose(bool isShutdown, object userData)