Developers of one of downtown Dallas’ tallest residential towers say they have landed a new loan. The two-year-old Atelier tower in the Dallas Arts District includes more than 400 rental units in 41 floors. The building on Pearl Street south of Klyde Warren Park is a project of Florida-based developer ZOM Living, which said it has obtained a $109 million loan on the building. The big debt deal comes at a time when lenders…