创建workflowStep时传入stepName,判断为空时不取用

src/Hotline/FlowEngine/Workflows/WorkflowDomainService.cs

@@ -602,12 +602,12 @@ namespace Hotline.FlowEngine.Workflows
             var unhandlePreviousTrace = workflow.Traces.FirstOrDefault(d =>
                 d.Status is not EWorkflowStepStatus.Handled
             );
-            
+
             var unCompletedCountersign = workflow.Countersigns
                 .FirstOrDefault(d => !d.IsCompleted() && d.StarterOrgId == orgId);
             if (unCompletedCountersign is null)
                 return (workflow, null, canHandle, canPrevious, unhandlePreviousTrace);
-            
+
             //var existCountersignEndStep = workflow.Steps.Exists(d =>
             //    d.IsCountersignEndStep && d.CountersignStartStepId == unCompletedCountersign.StartStepId);
             //return (workflow, existCountersignEndStep ? null : unCompletedCountersign.Id, canPrevious);
@@ -3385,7 +3385,8 @@ namespace Hotline.FlowEngine.Workflows
                 step.StepExpiredTime = expiredTime;
             //step.TimeLimit = GetTimeLimit("");
             step.IsOrigin = isOrigin;
-            step.Name = stepName;
+            if (!string.IsNullOrEmpty(stepName))
+                step.Name = stepName;
 
             //新增需求: 部门汇总节点由部门办理//todo 待确认中心由部门处理还是由之前办理人办理 待重构
             if (step.StepType == EStepType.Summary && step.BusinessType == EBusinessType.Department)