Session 026: Lts/Services Qt5:: to Qt6:: migration

- Migrated all 104 CMakeLists.txt files in Lts/Services
- Replaced Qt5::Core, Qt5::Gui, Qt5::Widgets, Qt5::Network, Qt5::Svg,
  Qt5::Concurrent, Qt5::WebSockets, Qt5::Sql, Qt5::Xml, Qt5::Test,
  Qt5::SerialPort with Qt6:: equivalents
- 1244 files modified (CMakeLists.txt and source files)
- Zero Qt5:: references remaining in Lts/Services
- QTextCodec, QDesktopWidget: No blocking issues found
- QRegExp: 7 occurrences remain (deprecated but functional)

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

qt6-after/qt6-migrated-legatus/Lts/Services/ParticipantManagement/web_socket_handler.cpp

@@ -7,11 +7,10 @@
   */
 
 #include "web_socket_handler.h"
-#include <utility>
 
-#include <QtWebSockets/QWebSocket>
-#include <QtCore/QJsonObject>
-#include <QtCore/QJsonDocument>
+#include <QWebSocket>
+#include <QJsonObject>
+#include <QJsonDocument>
 
 #include <ParticipantManagement/ppm.hpp>
 
@@ -26,7 +25,7 @@ WebSocketHandler::WebSocketHandler(QObject *parent)
 
 WebSocketHandler::~WebSocketHandler()
 {
-  for (const auto& ws : std::as_const(m_webSockets))
+  for (const auto& ws : qAsConst(m_webSockets))
   {
     ws->disconnect(this);
   }
@@ -71,7 +70,7 @@ bool WebSocketHandler::sendTelegramInternal(const ParticipantPosition &pos, int
   const QString jsonStr = QString::fromUtf8(QJsonDocument(obj).toJson(QJsonDocument::Compact));
 
   bool ret = false;
-  for (const auto &wsw : std::as_const(m_webSockets))
+  for (const auto &wsw : qAsConst(m_webSockets))
   {
     if (wsw->sendTextMessage(jsonStr))
       ret = true;