[ntuple] Fix lazy model loading in RNTupleReader::LoadEntry()
[ntuple] Fix lazy model loading in RNTupleReader::LoadEntry()

olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root