LOS ANGELES — A Woodland Hills man was sentenced Friday to 22 years and six months in prison for extorting Koreatown karaoke bar owners and drivers who transport party hostesses, sometimes violently attacking victims who refused to pay, including carjacking one of them after beating him with a baseball bat. Daekun Cho, 39, was also ordered by U.S. District Judge Fernando L. Aenlle-Rochato to pay $240,167 in restitution and a special assessment o…