Warning about advancedtext example on top-level configure

CMake Warning (dev) at qtbase/cmake/QtPublicTargetHelpers.cmake:420 (message):
  It looks like this example project was added via add_subdirectory instead
  of via qt_internal_add_example.  This causes issues in certain build
  configurations.  Please change the code to use    qt_internal_add_example(advancedtext)  instead.
Call Stack (most recent call first):
  /home/moheim/qt/build-6.9-base/qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:644 (_qt_internal_warn_about_example_add_subdirectory)
  /home/moheim/qt/build-6.9-base/qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:945 (qt6_add_executable)
  qtdeclarative/examples/quick/advancedtext/CMakeLists.txt:11 (qt_add_executable)
This warning is for project developers.  Use -Wno-dev to suppress it.

../qt6/configure -developer-build -ccache -linker lld -make tests -make examples -make manual-tests -prefix /opt/qt-6.9-dev-qtdeclarative -submodules qtdeclarative -- -DQT_SHOW_EXTRA_IDE_SOURCES=0 -DCMAKE_C_COMPILER=clang-19 -DCMAKE_CXX_COMPILER=clang++-19 -DLLVM_INSTALL_DIR=/usr/lib/llvm-19