Qt6 Migration: Merge latest Qt5 devel content and apply migration fixes

- Merged 292 changed files from dlbo snapshot
- Fixed IDL enum collisions (PortType, PdmEventType)
- Fixed Grantlee template for C++11 scoped enums
- Fixed CMake VERSION_GREATER syntax
- Added missing directories (THP, LtsRestClient, etc.)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Lts/Plugins/ParticipantManagement/Gui/PartyEdit/ppm_party_model.cpp

@@ -105,14 +105,11 @@ QVariant PartyModel::data(const QModelIndex &index, int role) const
       QString connectState;
       switch (status.underlying())
       {
-      case ParticipantManagement::ConnectState::Connected:
-        connectState = tr("Connected");
-        break;
-      case ParticipantManagement::ConnectState::NoHeartbeat:
-        connectState = tr("No Heartbeat");
+      case ParticipantManagement::ConnectState::Undefined:
+        connectState = QStringLiteral("");
         break;
       default:
-        connectState = QStringLiteral("");
+        connectState = ParticipantManagement::toString(status);
         break;
       }
       return connectState;