fix crash with groupstage more than 6 teams

PadelClubData/Data/GroupStage.swift

@@ -166,7 +166,7 @@ final public class GroupStage: BaseGroupStage, SideStorable {
         let order = _matchOrder()
         let matchCount = max(1, matchCount)
         let count = ordered.count / matchCount
-        if ordered.isEmpty == false && ordered.count % order.count == 0 {
+        if ordered.isEmpty == false && order.isEmpty == false && ordered.count % order.count == 0 {
             let repeatedArray = (0..<count).flatMap { i in
                 order.map { $0 + i * order.count }
             }