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Adjustments of Electron Isolation Variables in PHYSLITE

This MR changes the electron sequence to run the isolation corrections also on electrons and adds the corrected isolation variables to the output.

Without these corrections, we can't 100% reproduce the isolation variable distribution in PHYS as discussed in ATLASG-2530 (as the IsolationCorrectionTool needs some variables only present in the AOD for parts of the correction).

This addition increases the disk size of PHYSLITE from 14.183 kb/event to 14.189 kb/event, i.e. an increase of 0.04% (tested by running on 10k ttbar mc20 events) which is negligible.

Tagging @lpascual as IFF expert to double-check the implementation.

Edited by Michael Holzbock

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