Revert "chore: edm4eic 6.0.0"

This reverts commit 513cc448.

This commit went into master instead of a PR by mistake. The current EICrecon was not forward-compatible with EDM4eic 6.0.0. Reverting to get back to a valid state.

assigned to @veprbl

enabled an automatic merge when the pipeline for b1a3827c succeeds

canceled the automatic merge

merged