Tests with SwitchYardRunner do not call CXF Interceptors of SOAP Service Binding in Fuse 6.2.1

There is a partial workaround, which does not meet typical customer needs.
1. <soap:inInterceptors> does not work with SwitchyardRunner, unfortunately. At this moment, you need to use cxf.xml to define in/out interceptors for SOAP binding endpoints.
2. Even in cxf.xml, somehow cannot be set up on a per endpoint basis. The attached example uses <cxf:bus> instead, which means the interceptor configurations affect all SOAP endpoints in the single SwitchYard application.

I've attached a reproducer, which is a minor enhancement of a switchyard quickstart demo project.
There is only one test class (WebServiceTest), which looks for a HTTP header. This header should be set in the CXF Interceptor, which is unfortunately not called.
The CXF Interceptor is attached to the SOAP binding in the switchyard.xml and the context mapper also includes everything, so that no header is removed.