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/Proxies/CombatNetRadio/positions_cnr.cpp

@@ -75,14 +75,14 @@ WebSocketInterface::Messages::PositionsCnrMessage::PositionsCnrMessageData Posit
 
 QVector<WebSocketInterface::Messages::ReplyMessage::LonLatPoint> PositionsCnr::positionsForGlobal(const AudioVideoManagement::CnrConfig &config) const
 {
-  bool   isGlobal = !config.exerciseId.is_set();
+  bool   isGlobal = !config.exerciseId.has_value();
   Q_ASSERT(isGlobal);
   return positionsForLocal(config);
 }
 
 QVector<WebSocketInterface::Messages::ReplyMessage::LonLatPoint> PositionsCnr::positionsFor(const AudioVideoManagement::CnrConfig &config) const
 {
-  bool   isLocal = config.exerciseId.is_set();
+  bool   isLocal = config.exerciseId.has_value();
   if (isLocal)
     return positionsForLocal(config);
   else
@@ -96,11 +96,11 @@ QVector<WebSocketInterface::Messages::ReplyMessage::LonLatPoint> PositionsCnr::p
   auto   allParticipants = m_ppmDtc->participants();
 
   QSet<int> participantIdsInUnit;
-  if (config.unitId.is_set())
+  if (config.unitId.has_value())
     m_ppmDtc->participantIdsByUnit(config.unitId.get(), allParticipants, participantIdsInUnit);
   else
   {
-    bool   isGlobal = !config.exerciseId.is_set();
+    bool   isGlobal = !config.exerciseId.has_value();
     participantIdsInUnit = participantIdsFromParty(allParticipants, config.partyId, isGlobal);
   }
 
@@ -110,7 +110,7 @@ QVector<WebSocketInterface::Messages::ReplyMessage::LonLatPoint> PositionsCnr::p
   for (int participantId : std::as_const(participantIdsInUnit))
   {
     const ParticipantManagement::Participant   &participant = allParticipants.value(participantId);
-    if (!participant.equipmentNumber.is_set())
+    if (!participant.equipmentNumber.has_value())
       continue;
 
     const ParticipantManagement::Type   &type = m_ppmDtc->type(participant.typeId);