Complete Qt6 migration: full clean build green across groups G1-G12 incl. runtime plugin set

new_docker_build.sh gains Group 12 (212 GUI/Data plugins); fixes LtsUtilsGuiDds visibility (LTO-stripped exports), LtsProjectionWorkstation unity name shadow, 6 unity-off dirs (dup file-scope statics, ddsftc INTERFACE sources) and reconfigures BUILD_FILTERMANAGEMENT/BUILD_PLUGINS_SERVICEMONITOR=ON

qt6-after/qt6-migrated-legatus/Lts/Plugins/InfrastructureManagement/ism_data_plugin_interface.h

@@ -5,7 +5,7 @@
 #include <LtsUtils/LtsUtilsCore/data_modification_enum.h>
 
 #include <InfrastructureManagement/ism.hpp>
-#include <InfrastructureManagement/ism_mounting_point.h>
+#include <InfrastructureManagement/Shared/ism_mounting_point.h>
 #include <InfrastructureManagement/ism_dtc.h>
 #include <InfrastructureManagement/ism_ftc.h>
 #include <ParticipantManagement/ppm.hpp>
@@ -31,8 +31,6 @@ namespace InfrastructureManagement
 {
 class ForeignDataInterface;
 
-// Forward declaration for MainSchedule from ParticipantManagement
-using ParticipantManagement::MainSchedule;
 
 
 class ISMDATAPLUGININTERFACE_EXPORT DataInterface : public DataPluginBase::Interface