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/Resources/situation_map.qrc

@@ -0,0 +1,7 @@
+<RCC>
+    <qresource prefix="/situationMap">
+        <file>preview_aerial.png</file>
+        <file>preview_topographic.png</file>
+        <file>pushPinRedClipArt.png</file>
+    </qresource>
+</RCC>