ATLANTA — On a recent summer evening, Raymia Taylor wandered into a recreation center in a historical downtown neighborhood, the only enrollee to attend a nearly two-hour event for people who have signed up for Georgia’s experimental Medicaid expansion. The state launched the program in July 2023, requiring participants to document that they’re working, studying, or doing other qualifying activities for 80 hours a month in exchange for health coverage. At the event, booths were set up to help people join the Marines or pursue a GED diploma. Taylor, 20, already met the program’s requirements — …