[ByteStreamEmonSvc] New config for ByteStream reading from EMon
Two changes:
- Implement new (ComponentAccumulator) configuration for EMon ByteStream reading. Make the old JO a trivial wrapper around the new JO for now, until the clients are migrated to new JO.
- Integrate the EMon BS case as the third possibility of BS configuration in
TriggerByteStreamConfig.py
. We don't have a specific config flag identifying this case so I went with "isOnline && no input file && not running HLT or L1Sim" which should be robust enough.
This fixes ATR-24092