RALEIGH — A North Carolina law preventing legal settlements between farms and workers from requiring a farm operation to become a union employer doesn’t violate the U.S. Constitution, a federal appeals court ruled Wednesday while overturning a lower court decision. The decision by a panel of the 4th U.S. Circuit Court of Appeals in Richmond, Virginia, restores a provision contained in a 2017 farm law that was challenged by the Farm Labor Organizing Committee — the state’s only farmworker union with several thousand members. U.S. District Judge Loretta Biggs had ordered in 2021 that the provision be permanently blocked, determining…