修改成可空

src/Hotline/Orders/OrderSendBackAudit.cs

@@ -79,13 +79,13 @@ namespace Hotline.Orders
 		/// 申请部门ID
 		/// </summary>
 		[SugarColumn(ColumnDescription = "申请部门ID")]
-		public string ApplyOrgId { get; set; }
+		public string? ApplyOrgId { get; set; }
 
 		/// <summary>
 		/// 申请部门名称
 		/// </summary>
 		[SugarColumn(ColumnDescription = "申请部门名称")]
-		public string ApplyOrgName { get; set; }
+		public string? ApplyOrgName { get; set; }
 
 		/// <summary>
 		/// 退回部门ID