48488 centralized the creation of the TClass ... but it also ended up marking the interpreted class (for example std::pair) as emulated


git-svn-id: https://root.cern.ch/svn/root/trunk@48508 27541ba8-7e3a-0410-8455-c3a389f83636
fix for http://root.cern.ch/phpBB3/viewtopic.php?f=14&t=15968


git-svn-id: https://root.cern.ch/svn/root/trunk@48509 27541ba8-7e3a-0410-8455-c3a389f83636