Do not update workflow task stamp inside UpdateWorkflowTask()

Author: gow

service/history/workflow/mutable_state_impl.go

@@ -2859,9 +2859,8 @@ func (ms *MutableStateImpl) ApplyWorkflowExecutionPausedEvent(event *historypb.H
 	// Invalidate pending workflow task by incrementing the persisted stamp.
 	// This ensures subsequent task dispatch detects the change.
 	if ms.HasPendingWorkflowTask() {
-		workflowTask := ms.GetPendingWorkflowTask()
-		workflowTask.Stamp = workflowTask.Stamp + 1
-		ms.workflowTaskManager.UpdateWorkflowTask(workflowTask)
+		ms.executionInfo.WorkflowTaskStamp += 1
+		ms.workflowTaskManager.UpdateWorkflowTask(ms.GetPendingWorkflowTask())
 	}
 	return nil
 }

service/history/workflow/workflow_task_state_machine.go

@@ -1025,7 +1025,6 @@ func (m *workflowTaskStateMachine) UpdateWorkflowTask(
 	m.ms.executionInfo.WorkflowTaskHistorySizeBytes = workflowTask.HistorySizeBytes
 	m.ms.executionInfo.WorkflowTaskBuildId = workflowTask.BuildId
 	m.ms.executionInfo.WorkflowTaskBuildIdRedirectCounter = workflowTask.BuildIdRedirectCounter
-	m.ms.executionInfo.WorkflowTaskStamp = workflowTask.Stamp
 
 	m.ms.workflowTaskUpdated = true