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/Viewer/SituationMap/situation_map_export.h

@@ -0,0 +1,34 @@
+/**
+  * @RDE_HEADER@
+  * Export definitions
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+#pragma once
+
+#include <qglobal.h>
+
+#ifndef SITUATIONMAP_EXPORT
+# ifdef BUILD_STATIC_LIBRARIES
+#  define SITUATIONMAP_EXPORT
+# else
+#  if defined(MAKE_SITUATIONMAP_LIB)
+#   define SITUATIONMAP_EXPORT Q_DECL_EXPORT
+#  else
+#   define SITUATIONMAP_EXPORT Q_DECL_IMPORT
+#  endif
+# endif
+#endif
+
+#ifndef SITMAPGUIPLUGIN_EXPORT
+# ifdef BUILD_STATIC_LIBRARIES
+#  define SITMAPGUIPLUGIN_EXPORT
+# else
+#  if defined(MAKE_SITMAPGUIPLUGIN_LIB)
+#   define SITMAPGUIPLUGIN_EXPORT Q_DECL_EXPORT
+#  else
+#   define SITMAPGUIPLUGIN_EXPORT Q_DECL_IMPORT
+#  endif
+# endif
+#endif