Lionel Richie is returning to “American Idol” as a judge despite his recent health scares. The musician made the announcement during Luke Bryan’s star-studded Luke Bryan & Friends concert at Nashville’s Bridgestone Arena on Thursday. During the performance, Richie, Bryan and Carrie Underwood confirmed they will all return to the ABC singing competition show’s judging panel for its upcoming 25th season. The two country music stars made the announcement live on stage, while Richie, 77, appeared virtually in the midst of his recent health issues. Bryan and Richie have been on the “American Idol” judging panel since season 16, while…