A ban on e-bike riding for children 11 and under passed its first vote in the La Mesa City Council already, but councilmembers are now split about whether it’s best for the city. Jerry Jones wears three helmets: one as an e-bike rider, one as a dad to 10- and 12-year-olds, and another as a planning commissioner for La Mesa. If the ban — known in the county as the San Diego Electric Bicycle Safety Pilot Program — passes in La Mesa, Jones said, he…