Stream support: add a test for #8155

[lrineau]

It would be good to add Stream_support/test/Stream_support/issue8155.cpp which shows before/after. @soesau can you please do that.

Originally posted by @afabri in https://github.com/CGAL/cgal/issues/8155#issuecomment-2068661944

[sloriot]

ping @soesau