Change legacy wrap_dim to work with symint == (#86842)
- previously, sizes == vector<T>({0}) failed to hit SymInt::operator==, causing a the loop to bail out too early and make an invalid call to downstream maybe_wrap_dim helper
Pull Request resolved: https://github.com/pytorch/pytorch/pull/86842
Approved by: https://github.com/Chillee, https://github.com/malfet, https://github.com/albanD
