[GSS](6.4.x)Classes from external POJO project not listed in variable definitions dropdown of the process modeler

If we create a POJO project for model classes outside of business-central, then uploade the jar into artifact repository and added it as dependency in bpm project.The variable definitions dropdown should show custom classes when creating a new business process, but it didnt show custom classes in dropdown.

If we create a new project in business-central just for the pojo classes, these classes are then listed after a dependency on the pojo project has been defined.