updated condition to create StartOrchestrationOptions and set parent …

…trace id

src/Worker.Extensions.DurableTask/FunctionsDurableTaskClient.cs

@@ -78,7 +78,7 @@ public override Task<string> ScheduleNewOrchestrationInstanceAsync(
         CancellationToken cancellation = default)
     {
         Activity? currActivity = Activity.Current;
-        if (currActivity != null)
+        if (options == null && options?.ParentTraceId == null && currActivity != null)
         {
             options = new StartOrchestrationOptions(ParentTraceId: currActivity?.Id?.ToString());
         }