Add disappearing tracks to writeExtendedPRDInfo

This MR targets 22.0, providing the ability to save pixel/SCT clusters and MSOSs for disappearing tracks when using ConfigFlags.InDet.Tracking.writeExtendedPRDInfo=True. This functionality is required for the Exotics disappearing track + dE/dx analysis, which uses event picking and custom reconstruction to access pixel clusters. While this functionality is already available in 24.0 for reconstructing Run 3 data, it is not available in 22.0 for reconstructing Run 2 data.