fix: 修复类型映射问题

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application.Contracts/Dtos/Chat/ImageTaskOutput.cs

@@ -40,6 +40,7 @@ public class ImageTaskOutput
     /// <summary>
     /// 分类标签
     /// </summary>
+    [SqlSugar.SugarColumn( IsJson = true)]
     public List<string> Categories { get; set; } = new();
 
     /// <summary>
@@ -61,4 +62,5 @@ public class ImageTaskOutput
     /// 用户名称Id
     /// </summary>
     public Guid? UserId { get; set; }
+    
 }