AthenaPoolCnvSvc+OutputStreamAthenaPool: By default use a maximum basket buffer size of 128 KB and minimum buffer entries of 10 for the DAODs
This is a continuation of @gemmeren's developments in !46619 (merged). With this MR we limit the maximum basket buffer size to 128 KB and the minimum entries to 10 for the derivations. This update is expected to help w/ the overall memory usage in derivation jobs.