AthenaPoolExampleData, Rename source file to ExampleElectronAuxContainer

Jack Krausrequested to merge
akraus/athena:akraus-branch into main

This MR renames a source file in the AthenaPoolExampleData package from ExampleElectronContainer.cxx to ExampleElectronAuxContainer.cxx, matching the appropriate name to its constructor.

Merge request reports