Fix crash when deleting tournament

PadelClub/Data/Tournament.swift

@@ -352,19 +352,19 @@ final class Tournament : ModelObject, Storable {
     
     override func deleteDependencies() throws {
         let store = self.tournamentStore
-        let teams = self.tournamentStore.teamRegistrations
+        let teams = Array(self.tournamentStore.teamRegistrations)
         for team in teams {
             try team.deleteDependencies()
         }
         store.teamRegistrations.deleteDependencies(teams)
         
-        let groups = self.tournamentStore.groupStages
+        let groups = Array(self.tournamentStore.groupStages)
         for group in groups {
             try group.deleteDependencies()
         }
         store.groupStages.deleteDependencies(groups)
         
-        let rounds = self.self.tournamentStore.rounds
+        let rounds = Array(self.tournamentStore.rounds)
         for round in rounds {
             try round.deleteDependencies()
         }