PuppiMET does not include latest JECs for Type-1 corrections in NanoAOD and missing uncertainties

[saghosh]

Reapplication of JECs for Type-1 corrections for PuppiMET is not performed to include the latest JECs during NanoAOD production.
https://github.com/cms-sw/cmssw/blob/master/PhysicsTools/NanoAOD/python/nano_cff.py#L198

This is particularly relevant for 2018D in which the MiniAOD is PROMPT RECO.
It is not possible to re-apply JECs on the fly since the AK4PuppiJet collection is not stored in NanoAOD.

Also uncertainties for PuppiMET, particularly UnclusteredEnergy Uncertainties and the JER, JES down uncertainties are missing.
Only part of the uncertainties were added previously : https://github.com/cms-nanoAOD/cmssw/pull/516/files

We will be working on a PullRequest to fix this soon

[saghosh]

Resolved with CMSSW PR : cms-sw#30922