Default qt_generate_deploy_qml_app_script does not deploy QtWebEngineProcess(d).exe to where it should be

Can be reproduced by any WebEngine project, e.g. nano browser example. But do the following modifications:
1. Add install script to CMakeLists.txt, e.g.

qt_generate_deploy_qml_app_script(
    TARGET quicknanobrowser
    OUTPUT_SCRIPT deploy_script
    MACOS_BUNDLE_POST_BUILD
    NO_UNSUPPORTED_PLATFORM_ERROR
    DEPLOY_USER_QML_MODULES_ON_UNSUPPORTED_PLATFORM
)
install(SCRIPT ${deploy_script})

at the end
2. Set CMAKE_INSTALL_PREFIX to somewhere you have privilege to write to.
3. Also check "install" as target

Then inside installation, you can see QtWebEngineProcess(d).exe being installed to right under top-level directory. The correct location should be under /bin. That is where Qt looks for by default (For Qt installations, this is QTDIR/libexec (Linux) or QTDIR\bin (Windows).):
https://doc.qt.io/qt-6/qtwebengine-deploying.html#deploying-qt-webengine-processes

Workaround is simple: manually move it or set QTWEBENGINEPROCESS_PATH. But default behavior does not work out of the box is weird and needs fix.