[fix] 修复cfg ts加载bin格式datetime类型时返回bigint的bug

src/Luban.Job.Common/Source/TypeVisitors/TypescriptBinUnderingDeserializeVisitorBase.cs

@@ -166,7 +166,7 @@ namespace Luban.Job.Common.TypeVisitors
 
         public string Accept(TDateTime type, string bufVarName, string fieldName)
         {
-            return $"{fieldName} = {bufVarName}.ReadLong()";
+            return $"{fieldName} = {bufVarName}.ReadLongAsNumber()";
         }
     }
 }