Added test case and setting Test configuration

qt6-after/qt6-migrated-legatus/include/DDS/DTC/generic_dtc_impl.h

@@ -8,6 +8,12 @@
 
 #pragma once
 
+#ifdef BUILD_RTI
+// Forward to the real implementation in Lts/DDS/. "include/" is searched
+// before "Lts/", so this header would otherwise shadow it.
+#include_next <DDS/DTC/generic_dtc_impl.h>
+#else
+
 #include <DDS/Generic/generic_data_reader.h>
 #include <DDS/Generic/subscriber_listener.h>
 #include <DDS/Generic/generic_logger.h>
@@ -317,3 +323,5 @@ public:
 };
 
 }  // namespace DTC
+
+#endif // BUILD_RTI