Add EventInfoCnvAlg to AthSimulation Project
After the changes in !20912 (merged) it was found that
needed to be added to the
AthSimulation project to prevent unit
test failures. This package requires the
package, so that was added also.
Some tweaks had to be made to the
Event/xAOD/xAODEventInfoCnv to hide
dependencies on packages which are not part of the AthSimulation project.