fix randomu unique index not saving

PadelClub/Views/Team/EditingTeamView.swift

@@ -413,6 +413,7 @@ struct EditingTeamView: View {
         }
         .onChange(of: uniqueRandomIndex) {
             if canSaveWithoutWarning() {
+                team.uniqueRandomIndex = uniqueRandomIndex
                 _save()
             }
         }