When using a cmake presets file the usual (minimal) Json sections are the "configurePresets" and "buildPresets".

Whilst Qt Creator appears to be parsing the "configurePresets" it does not appear to be parsing the "buildPresets".
Instead, it appears to be making available the `CMAKE_CONFIGURATON_TYPES` from the "configurePresets" as target configurations.

This can be reproduced by using the Ninja Multiconfig example from: https://doc.qt.io/qtcreator/creator-build-settings-cmake-presets.html (but see QTCREATORBUG-33274).
The named "buildPresets" specified in that example are not created.  The "buildPresets" section can even be removed and the same configuration will be created.