Reverting DiPhoton L1Topo Algorithms to eEM12sl1-eEM12sl6
This MR partially reverts the changes in !68188 (merged), after it was found that using a single input list and evaluating all combinations of the 6 leading TOBs resulted in excessive rates.
The MR reverts the algorithm behaviour to separate input lists, checking only combinations of the leading TOB with any of the 5 sub-leading TOBs.