Celebrity hotel heiress Paris Hilton is backing California lawmakers’ push to increase the transparency of residential teen therapeutic centers by requiring these programs to report the use of restraints or seclusion rooms in disciplining minors. “We shouldn’t be placing youth in facilities without knowing what these children will be subjected to,” Hilton testified Monday to the Senate Human Services Committee in Sacramento. “The Accountability in Children’s Treatment Act is a simple transparency measure that would make a lasting impact and show the world what truly happens behind closed doors…