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/SqlBrowser/BrowserWnd.cpp

@@ -9,7 +9,7 @@
 #include <QGraphicsDropShadowEffect>
 #include <QListWidgetItem>
 #include <QMessageBox>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QShortcut>
 #include <QThread>
 
@@ -158,7 +158,7 @@ void BrowserWnd::slotNewTableList(QStringList tables)
 {
   if (!m_ui->leFilter->text().isEmpty()) // filter when there is a filter
   {
-    QRegExp regExp(m_ui->leFilter->text(), Qt::CaseInsensitive, QRegExp::Wildcard);
+    QRegularExpression regExp(QRegularExpression::wildcardToRegularExpression(m_ui->leFilter->text()), QRegularExpression::CaseInsensitiveOption);
     tables = tables.filter(regExp);
   }