California’s retail theft problem got personal for Gov. Gavin Newsom on Wednesday when he shared a story about confronting a Target store clerk who didn’t stop a man from taking merchandise without paying. Turns out the clerk — who didn’t recognize Newsom at first — blamed her hands-off stance on the governor. Newsom this month announced a host of new law enforcement measures to crack down on a growing retail theft problem that stops short of changes to Proposition 47, the 2014 criminal justice reform measure that lowers penalties for drug and property crimes. Critics have blamed Prop 47 and o…