Lts/Tools: Complete QRegExp to QRegularExpression migration

- Migrated QRegExp → QRegularExpression in:
  - DdsView/detailview.cpp (line 636)
  - DdsView/sequences/abstractsequencewidget.cpp (line 167)
  - VapixConfig/httprequesthandler.cpp (lines 68, 95, 136)
  - ConfigX/configurator.cpp
  - LogViewer/sortfiltermodel.cpp
  - SqlBrowser/BrowserWnd.cpp
- Added Qt6::Core5Compat to TextEditorTest CMakeLists.txt for QTextCodec support
- All QRegExp instances in Lts/Tools now migrated to QRegularExpression

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

qt6-after/qt6-migrated-legatus/Lts/Tools/DdsView/detailview.cpp

@@ -21,6 +21,7 @@
 #include <QTabWidget>
 #include <QPushButton>
 #include <QMouseEvent>
+#include <QRegularExpression>
 
 #include <limits>
 #include <functional>
@@ -632,7 +633,7 @@ QWidget *DetailView::createWidget(const RwMode &readOnly,
   case dds::core::xtypes::TypeKind::STRUCTURE_TYPE:
   {
     //noNaming = true;
-    g = name.contains(QRegExp(QLatin1String(".([0-9]*)$"))) ? new QWidget(parent) : new QGroupBox(name, parent);
+    g = name.contains(QRegularExpression(QLatin1String(".*([0-9]*)$"))) ? new QWidget(parent) : new QGroupBox(name, parent);
 
     QGridLayout *gl = new QGridLayout(g);