21.2 modify electron-in-jet subtraction method

This merge request contains:

1. Fundamental change in the electron-in-jets subtraction method:

   • Previously, the electron-subtracted jet pT was needed to pass a certain threshold value to qualify as a legitimate jet. The threshold values were estimated in the bins of jet pT.
   • We are proposing to change the variable to the ratio of electron-subtracted jet pT and (original jet pT + bias term). So, only one threshold value, and one offset value are needed.
   • These two variables are added in TopConfiguration tool. The threshold values can be set using ElectronInJetSubtractionCut option and the bias term can be set using ElectronInJetSubtractionBias option in the AnlysisTop config file.

2. A small bugfix: jet objects were not properly handled while using the electron-in-jet subtraction method on the loose leptons.