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/Tools/Adler/WebSocketSimulator/awss_icd_test.h

@@ -82,6 +82,7 @@ class ICDTest : public QWidget
   void generateEXFlugbahnberechnung(); // Flugbahnberechnung
   void generateEXFlugbahndaten();      // Flugbahndaten
   void onSendHeartbeatChanged();
+  void selectAndSendJson();
 
   private:
   void generateConnectionPage();
@@ -91,6 +92,7 @@ class ICDTest : public QWidget
   void generateTrajectoryGenerationPage();
   void generateTextMessagePage();
   void generateErkundungsergebnissePage();
+  void generateFilePage();
   void generateStatusPage();
   void generateEXSQWS_1WS(const QString &verein, const QString &kenner);
 
@@ -101,6 +103,7 @@ class ICDTest : public QWidget
   QTimer m_heartbeatTimer;
   QString m_lastFeuerkampfReferenz;
   QString m_fixedReference;
+  QByteArray m_pendingData;
 };
 
 } // namespace AdlerWebSocketSimulator