Follow-up from "Allen RICH decoding"

@samarian please check whether this has been properly tackled

The following discussion from !1145 (merged) should be addressed:

• @dcampora started a discussion: (+3 comments)

  There seems to be an incompatibility between this and LHCb, which is preventing me from developing the test comparing LHCb and Allen RICH pixel IDs. In Allen it seems like there are two Rich raw banks (https://gitlab.cern.ch/lhcb/Allen/-/blob/master/main/include/BankTypes.h#L18), and in LHCb there is a single one (https://gitlab.cern.ch/lhcb/LHCb/-/blob/master/Event/DAQEvent/include/Event/RawBank.h#L72). Is there a reason behind this discrepancy? Otherwise it would probably make sense to make it akin to LHCb. CC @raaij @jonrob