EventInfo+AtlasSTLAddReflex: Tweak selection to avoid warning with gcc12.
With gcc12, std::pair has an internal class __zero_as_null_pointer_constant. genreflex warns about this if we try to generate a dictionary for it, so make sure it's excluded.
With gcc12, std::pair has an internal class __zero_as_null_pointer_constant. genreflex warns about this if we try to generate a dictionary for it, so make sure it's excluded.