Code style settings are ignored on Ctrl+I for qbs projects

1. Start Qt Creator
2. Set the e.g. indent size to 2:
   • Menu: Tools > Options > C++ > Code Style > Edit... and set "Indent size" to "2"
   • "Copy Built-in Code Style" if required.
3. Create a *.qbs project (Wizard: Non-Qt Project > Plain C++ Application > Choose "qbs' as build system)
4. The main.cpp file is opened and it is correctly indented.
5. Re-indent the "cout" line with "Ctr+I" - two extra spaces are inserted although it's already correctly indented.

The same works fine with a qmake project.

Observations:

• For the qbs project, SessionManager::configureEditor will not find a project for the given file path if an editor is opened.
• For the qmake project, it does find the project and sets the appropriate settings.