ModuleLoader: Set project-level search paths
ModuleLoader: Set project-level search paths

... when adding transitive dependencies.
This was forgotten in 7e630a1436.

Change-Id: If1a4bbecb8ee7b828d8b32ae79933ac07ad58d12
Reviewed-by: Joerg Bornemann <47777b9406dbddd02a3fdca8341789a013805a11@qt.io>

qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qtproject/qt-labs-qbs