Adjustments to PHYSLITE for trigger matching and e-gamnma analysis sequence
This makes two unrelated adjustments to PHYSLITE:
- it changes the prefix for the trigger matching tool from "Analysis" to "AnalysisTrigMatch_" which is more consistent with the rest of the prefixes
- it disables the recomputation of the isEM flag in the photon analysis sequence, the tool for which now depends on variables that are not in DAOD_PHYS, thus breaking the PHYS->PHYSLITE workflow if this adjustment isn't made