Adjust CaloCluster links to charged PFO for HI reprocessing

Mark Hodgkinsonrequested to merge
atlas-particleflow-software/athena:mhodgkin_HIPFlowJetClusters into 21.0

This MR adjusts the links from charged PFO to point at CaloCalCluster, which are in the xAOD. This is a requirement for the HI reprocessing.

This change should not propagate into master.

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