fix:修复轨迹比较字段的验证忽略了NewExtra的问题

src/SJZY.Track.Application/Services/ProvideServices/TrackService.cs

@@ -488,7 +488,7 @@ public partial class TrackService : ApplicationService, ITrackService
             throw new BusinessException(message: "【预计签收时间】和【签收地时区】必须同时输入");
         }
 
-        if (!string.IsNullOrWhiteSpace(compareFields) && string.IsNullOrWhiteSpace(extra))
+        if (!string.IsNullOrWhiteSpace(compareFields) && string.IsNullOrWhiteSpace(newExtra ?? extra))
         {
             throw new BusinessException(message: "当输入了【轨迹对比字段】则轨迹扩展是必须的的");
         }