Add check for data events with no PV in PhotonSelectionWrapper

Fix HIGG1D1 derivation to cover data events where no PV is reconstructed. In that case the sumPt2 DecorHandle is considered as not available (even if it is for previous events) and the current implementation leads to

PhotonVertexSel...  ERROR SG::ExcStoreLocked: Attempted to modify auxiliary data in a locked store: `::sumPt2' (1237)

Should be the last occurence of ATEAM-939