22.0-bugfix-MdtRawDataMonitoring

While investigating FPE's from q221 test, and having solved them (subject of !26081 (merged)), there was an exception thrown from MdtRawDataValArg:

ESDtoAOD 13:45:00 MdtRawMonManager ERROR SG::ExcNoAuxStore: Requested aux data item `::roiWord' (881) but there is no associated aux data store

To solve this, the retrieval of these quantities is enclosed in a try...catch and the quantity simply reported as 'unavailable'