fix issue with groupstage start date

PadelClubData/Data/GroupStage.swift

@@ -606,6 +606,10 @@ final public class GroupStage: BaseGroupStage, SideStorable {
         guard hasEnded() else { return nil }
         return teams(true).firstIndex(of: team)
     }
+    
+    public func computedStartDate() -> Date? {
+        return _matches().sorted(by: \.computedStartDateForSorting).first?.startDate
+    }
 
     public override func deleteDependencies(store: Store, shouldBeSynchronized: Bool) {
         

PadelClubData/Data/MatchScheduler.swift

@@ -131,6 +131,9 @@ final public class MatchScheduler: BaseMatchScheduler, SideStorable {
         } catch {
             Logger.error(error)
         }
+        
+        groupStages.forEach({ $0.startDate = $0.computedStartDate() })
+        self.tournamentStore?.groupStages.addOrUpdate(contentOfs: groupStages)
         return lastDate
     }