Update HangfireBackgroundWorkerBase

framework/src/Volo.Abp.BackgroundWorkers.Hangfire/Volo/Abp/BackgroundWorkers/Hangfire/HangfireBackgroundWorkerBase.cs

@@ -19,7 +19,7 @@ public abstract class HangfireBackgroundWorkerBase : BackgroundWorkerBase, IHang
 
     protected HangfireBackgroundWorkerBase()
     {
-        TimeZone = null;
+        TimeZone = TimeZoneInfo.Utc;
         Queue = EnqueuedState.DefaultQueue;
         TimeZone = TimeZoneInfo.Utc;
     }

framework/src/Volo.Abp.BackgroundWorkers.Hangfire/Volo/Abp/BackgroundWorkers/Hangfire/HangfirePeriodicBackgroundWorkerAdapter.cs

@@ -16,8 +16,6 @@ public class HangfirePeriodicBackgroundWorkerAdapter<TWorker> : HangfireBackgrou
     {
         _doWorkAsyncMethod = typeof(TWorker).GetMethod("DoWorkAsync", BindingFlags.Instance | BindingFlags.NonPublic)!;
         _doWorkMethod = typeof(TWorker).GetMethod("DoWork", BindingFlags.Instance | BindingFlags.NonPublic)!;
-        
-        TimeZone = TimeZoneInfo.Utc;
         RecurringJobId = typeof(TWorker).Name;
     }