Migrates remaining services and plugins to generated rtiddsgen API

Converts accessor calls to plain member access across the residual service set.

qt6-after/qt6-migrated-legatus/Lts/Services/Messaging/dds_handler.cpp

@@ -56,7 +56,7 @@ bool DdsHandler::init(const QStringList &qosFileList)
 
 qint64 DdsHandler::currentPartitionTime() const
 {
-  return m_dtcCore->partitionTime().timeStamp();
+  return m_dtcCore->partitionTime().timeStamp;
 }