Python projects fail in Qt Creator when Qt Quick designer components are used (missing pyside6-ds wheel)

When Python projects that use designer components (like QtQuick.Studio.Application) are exported from QDS and run in Creator, execution fails without giving details of the error.

Steps to reproduce 

• Create a project in QDS 4.6
• Export Project > Enable Python Generator
• Create a Python project in Qt Creator
• Add the generated code above, open main.py and install PySide6 using the install button in the IDE
• Run the project

Result: 

Compiler output (no error)

15:59:04: Running steps for project Project...
15:59:04: Starting: "C:\...\Project\.qtcreator\Python_3_11_64_bit_venv\Scripts\pyside6-project.exe" build
15:59:06: The process "C:\...\Project\.qtcreator\Python_3_11_64_bit_venv\Scripts\pyside6-project.exe" exited normally.
15:59:06: Elapsed time: 00:01.

Application output (fails but no details)

15:59:06: Starting C:\...\Project\.qtcreator\Python_3_11_64_bit_venv\Scripts\python.exe -u main.py...
15:59:06: C:\...\Project\.qtcreator\Python_3_11_64_bit_venv\Scripts\python.exe exited with code -1

When the program is run manually from a command prompt, error details are shown as follows

QQmlApplicationEngine failed to load component
file:///C:/.../Project/ProjectContent/App.qml:14:5: Type Screen01 unavailable
file:///C:/.../Project/ProjectContent/Screen01.ui.qml: Type Constants unavailable
file:///C:/.../Project/Project/Constants.qml:3:1: module "QtQuick.Studio.Application" is not installed

To fix this, pyside6_ds must be installed manually in Qt Creator's virtual environment. The project then works in Creator as well.
pip install pyside6_ds

Expected behavior

• Install pyside6_ds automatically when required by the project
• Show error details when packages are missing