SANTA ANA—Days after the man and woman charged with killing a six-year-old boy in a road-rage shooting on the Costa Mesa (55) Freeway, they got into another traffic altercation in which the alleged shooter waved a gun at another motorist, prosecutors said in court papers filed June 16. Marcus Anthony Eriz, 24, and Wynne Lee, 23, are scheduled to be arraigned June 18 when Orange County Superior Court Judge Larry Yellin will consider a request from prosecutors to set bails at higher-than-usual levels. The victim, Aiden Leos, was fatally shot May 21 as her mother, Joanna Cloonan, was driving him to kindergarten in her Chevrolet Sonic on the freeway. About 8 a.m. that day, the two were cut off by the defendants, who were in a Volkswagen Golf Sportwagen, according to prosecutors. Lee was behind Cloonan in the diamond lane before swinging over to the fast lane and then accelerating …