[@types/react-table] fixed groupByFn type to match implementation (#44951)
[@types/react-table] fixed groupByFn type to match implementation (#44951)


markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped