fix the dictionary loading issue from ATLASG-1601
This will hopefully address the issues in loading the xAOD::JetContainer
dictionary by preloading the
DataVectorBase
dictionary for jets which makes sure the explicit
specialization is seen before the DataVector
is created.
I'm far from certain that this will fix all the issues and that this will not create new issues of its own, but it's the best I could come up with right now. Let's see what the CI tests say.
It may be nice to also add that dictionary to the xAODJet package itself, and maybe that would even avoid the issue of needing to preload the dictionary in xAOD::Init
, I didn't try that.
cc @akraszna