qttools: Build failure if litehtml is found on the system

/usr/bin/c++ -DLITEHTML_UTF8 -DQLITEHTML_STATIC_LIBRARY -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_CAST_TO_ASCII -DQT_NO_JAVA_STYLE_ITERATORS -DQT_RESTRICTED_CAST_FROM_ASCII -DQT_USE_QSTRINGBUILDER -DQT_WIDGETS_LIB -I/home/qtrob/dev/g++-12.1.1/qt-6.3.2-nowebengine-r/qttools/src/assistant/qlitehtml/src/qlitehtml_autogen/include -I/home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src -I/home/qtrob/dev/g++-12.1.1/qt-6.3.2-nowebengine-r/qtbase/include -I/home/qtrob/dev/g++-12.1.1/qt-6.3.2-nowebengine-r/qtbase/include/QtWidgets -I/home/qtrob/dev/g++-12.1.1/qt-6.3.2-nowebengine-r/qtbase/include/QtCore -I/home/qtrob/dev/g++-12.1.1/qt-6.3.2-nowebengine-r/qtbase/mkspecs/linux-g++ -I/home/qtrob/dev/g++-12.1.1/qt-6.3.2-nowebengine-r/qtbase/include/QtGui -isystem /usr/include/litehtml -DNDEBUG -O2 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -w -fPIC -std=c++17 -MD -MT qttools/src/assistant/qlitehtml/src/CMakeFiles/qlitehtml.dir/container_qpainter.cpp.o -MF qttools/src/assistant/qlitehtml/src/CMakeFiles/qlitehtml.dir/container_qpainter.cpp.o.d -o qttools/src/assistant/qlitehtml/src/CMakeFiles/qlitehtml.dir/container_qpainter.cpp.o -c /home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter.cpp
In file included from /home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter.cpp:30:
/home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter_p.h:99:9: error: 'int DocumentContainerPrivate::pt_to_px(int)' marked 'override', but does not override
   99 |     int pt_to_px(int pt) override;
      |         ^~~~~~~~
/home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter.cpp: In constructor 'DocumentContainer::DocumentContainer()':
/home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter.cpp:461:13: error: invalid new-expression of abstract class type 'DocumentContainerPrivate'
  461 |     : d(new DocumentContainerPrivate)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~
/home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter_p.h:83:7: note:   because the following virtual functions are pure within 'DocumentContainerPrivate':
   83 | class DocumentContainerPrivate final : public litehtml::document_container
      |       ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/litehtml/litehtml.h:4,
                 from /home/qtrob/dev/src/qt-6.3.2/qttools/src/assistant/qlitehtml/src/container_qpainter_p.h:33:
/usr/include/litehtml/html.h:42:65: note:     'virtual int litehtml::document_container::pt_to_px(int) const'
   42 |                 virtual int                                     pt_to_px(int pt) const = 0;
      |                                                                 ^~~~~~~~
[252/2971] Building CXX object qttools...keFiles/qdoc.dir/clangcodeparser.cpp.o
ninja: build stopped: subcommand failed.