A 14-year-old boy was hospitalized Monday after he was wounded in what police believe was an accidental shooting in the Mid-City area of Los Angeles. The shooting was reported at 10:45 p.m. Sunday in an apartment at 4630 Venice Blvd., a Los Angeles Police Department spokeswoman told City News Service. That is near Vineyard Avenue. The wounded boy had stable vital signs at the hospital, she said. Officers took a 16-year-old girl into custody, acc…