test: Additional unit tests for the Transaction class, courtesy of Github Copilot. (#2262)

Author: tippmar-nr

src/Agent/NewRelic/Agent/Core/Transactions/Transaction.cs

@@ -892,11 +892,6 @@ public void SetReferrerUri(string uri)
 
         public void SetQueueTime(TimeSpan queueTime)
         {
-            if (queueTime == null)
-            {
-                throw new ArgumentNullException(nameof(queueTime));
-            }
-
             TransactionMetadata.SetQueueTime(queueTime);
         }
 

src/Agent/NewRelic/Agent/Core/Wrapper/AgentWrapperApi/Builders/CandidateTransactionName.cs

@@ -103,7 +103,7 @@ public void Freeze(TransactionNameFreezeReason reason)
 
         private static string FormatTransactionName(ITransactionName transactionName, TransactionNamePriority priority)
         {
-            return $"{transactionName.GetType().Name}{JsonConvert.SerializeObject(transactionName)} (priority {(int)priority}, {priority})";
+            return $"{transactionName.GetType().Name}{JsonConvert.SerializeObject(transactionName as TransactionName)} (priority {(int)priority}, {priority})";
         }
     }
 }