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/GraphicalObjects/stub_graphical_object.h

@@ -0,0 +1,69 @@
+/**
+  * @RDE_HEADER@
+  * StubGraphicalObject
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+// Own
+#include "abstract_graphical_object.h"
+
+#include <Map/situation_map_types.h>
+
+
+// Esri
+
+
+
+namespace SituationMap
+{
+
+
+
+/**
+     @class StubGraphicalObject stub_graphical_object.h
+     The class \c StubGraphicalObject is used as substitution for a graphical object. It does
+     nothing and the purpose is only to satisfy the interface of AbstractGraphicalObject.
+     @see AbstractGraphicalObject
+   */
+class StubGraphicalObject : public AbstractGraphicalObject
+{
+
+public:
+
+  explicit StubGraphicalObject()
+    : AbstractGraphicalObject(nullptr, nullptr, QString(), UniqueMapId())
+  {
+  }
+
+  ~StubGraphicalObject() = default;
+
+  StubGraphicalObject(const StubGraphicalObject &other)      = delete;
+  StubGraphicalObject &operator=(StubGraphicalObject &other) = delete;
+
+protected:
+
+  bool changed()        override
+  {
+    return false;
+  }
+
+  bool updateViewImpl() override
+  {
+    return true;
+  }
+
+  bool create()         override
+  {
+    return true;
+  }
+
+};
+
+
+
+} // namespace SituationMap
+