Fix configuration error for the FTF L2ResidualCalculator
The wrong tool variable was being set by the job option for the TrigL2ResidualCalculator in the FastTrackFinder, resulting in the ZFinder being given the wrong configuration, which caused a crash in the python3 execution reported in https://its.cern.ch/jira/browse/ATR-21463.
This fixes https://its.cern.ch/jira/browse/ATR-21463
Edited by Mark Sutton