定时服务启动方式调整，并调整相关业务代码

WarehouseMgr/Tnb.WarehouseMgr/TimedTaskBackgroundService.cs

@@ -39,6 +39,7 @@ namespace Tnb.WarehouseMgr
     /// </summary>
     public class TimedTaskBackgroundService : BackgroundService
     {
+        public bool IsStarted { get; set; }
         private IEventPublisher _eventPublisher = default!;
         private readonly IServiceProvider _serviceProvider;
         private static Dictionary<string, Func<CancellationTokenSource?, Task>> _timedFuncMap = new(StringComparer.OrdinalIgnoreCase);
@@ -59,6 +60,7 @@ namespace Tnb.WarehouseMgr
 
         protected override Task ExecuteAsync(CancellationToken stoppingToken)
         {
+            IsStarted = true;
             var queueTask = Task.Run(async () =>
              {