Adapt to changed RNTuple headers in ROOT master
Fix for the new RNTuple headers in LCG dev3 that were causing our nightly dev3 problems.
Also reduce AthenaServices dependency on RootAuxDynIO so it compiles even if the other package fails
Fix for the new RNTuple headers in LCG dev3 that were causing our nightly dev3 problems.
Also reduce AthenaServices dependency on RootAuxDynIO so it compiles even if the other package fails