converting direct access to StoreGate by handle
Following discussion on ATR-23064 the data is currently accessed in the following way:
- L1Menu via SG::ReadHandleKeyTrigConf::L1Menu (once at start)
- event's ALFA robFragments via ServiceHandle
- event's trigger pattern via: SG::ReadHandleKeyROIB::RoIBResult
It works and produces results as before the conversion.