😎优化分页基类默认值，避免直接运行返回异常

Admin.NET/Admin.NET.Core/Utils/BaseFilter.cs

@@ -14,6 +14,7 @@ public class Search
     /// <summary>
     /// 字段名称集合
     /// </summary>
+    /// <example>&quot;[]&quot;</example>
     public List<string> Fields { get; set; }
 
     /// <summary>
@@ -35,6 +36,7 @@ public class Filter
     /// <summary>
     /// 筛选过滤条件子项
     /// </summary>
+    /// <example>&quot;[]&quot;</example>
     public IEnumerable<Filter>? Filters { get; set; }
 
     /// <summary>
@@ -71,5 +73,6 @@ public abstract class BaseFilter
     /// <summary>
     /// 筛选过滤条件
     /// </summary>
+    /// <example>[]</example>
     public Filter? Filter { get; set; }
 }