fix a bug for TGCTriggerData (ATR-22478)
As reported in ATR-22478, and !38485 (merged), TGCTriggerData::getFlagPtEifi() causes a crash in some configurations which reading the EIFI-CW database is not read.
Sanity checks whether EIFI-CW is active or not are added. RecExCommon_links.sh; athena.py myTopOptions.py
is successfully finished by this change.