Fixing crash in run 4 offline FTF ART tests

As title describes, this fixes a crash occuring for two run 4 ART tests for running FTF as an offline algorithm with an ITk dataset. This crash was introduced via !63842 (merged) where the values of "flags.Tracking.ActiveConfig.doHitDV" and "flags.Tracking.ActiveConfig.doDisappearingTrk" are required. However, previously for these ART tests, trigger-specific flags were not needing to be set up and hence doHitDV and doDisappearingTrk were never created - causing the crash when they are now required.

This change simply adds in the required flags to the FTF pass of the ITk flags.

Fixes issue related to ATLSWUPGR-201

This MR targets master as the ART tests only run in master, and this is all purely upgrade-related code.

Tagging @smh @tstreble

Tracking/TrkConfig/python/TrackingPassFlags.py

@@ -462,6 +462,8 @@ def createITkFTFPassFlags():
 
     icf = createITkFastTrackingPassFlags()
     
+    icf.addFlag("doHitDV"            , False)
+    icf.addFlag("doDisappearingTrk"  , False)
     icf.minPT                 = [0.9 * Units.GeV, 0.4 * Units.GeV, 0.4 * Units.GeV]
     icf.minPTSeed             = 0.9 * Units.GeV