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/include/InfrastructureManagement/ism_mounting_point.h

@@ -126,7 +126,7 @@ public:
 
 private:
   static QMap<MountingPointType, MpNameImageData> &getImageTableInternal();
-  static void insertHelper(MountingPointType::type type,
+  static void insertHelper(MountingPointType type,   // Qt6: legacy MountingPointType_def::type -> enum class MountingPointType (no nested ::type)
                            const QString &name,
                            const QString &colorCodeGray,
                            const QString &colorCodeGreen,