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/Services/ParticipantManagement/ppm_dtc_impl_custom.cpp

@@ -194,7 +194,7 @@ int DtcImplCustom::participantIdByEquipmentNumber(int equipmentNumber) const
 
   for (const auto &sample : m_dtcParticipant->readAlive())
   {
-    if (sample.data().equipmentNumber.is_set() && sample.data().equipmentNumber.get() == equipmentNumber)
+    if (sample.data().equipmentNumber.has_value() && sample.data().equipmentNumber.get() == equipmentNumber)
       return sample.data().id;
   }
 
@@ -210,7 +210,7 @@ int DtcImplCustom::equipmentNumberByParticipantId(int participantId) const
   {
     if (sample.data().id == participantId)
     {
-      if (sample.data().equipmentNumber.is_set())
+      if (sample.data().equipmentNumber.has_value())
         return sample.data().equipmentNumber.get();
     }
   }
@@ -477,7 +477,7 @@ QVector<TemplateParticipant> DtcImplCustom::inferiorTemplates(int templateId)
   const TemplateParticipant participant = templateParticipant(templateId);
   retVector.append(participant);
 
-  if (participant.inferiorIds.is_set())
+  if (participant.inferiorIds.has_value())
   {
     retVector.reserve(participant.inferiorIds.get().size() + retVector.size());
     for (int inferiorId : participant.inferiorIds.get())