fix: resolve issues with updating playoffs

        /// <param name="teams">All teams participating in given tournament</param>

        private static void UpdatePlayoffs(List<Match> matches, List<TournamentTeam> teams)

        {

            if (matches.Count(m => m.Round == 0 && m.GoalsHost != m.GoalsGuest) != Match.groupMatchesTotal)

            if (matches.Count(m => m.Round == 1 && m.GoalsHost != m.GoalsGuest) != Match.groupMatchesTotal)

            {

                return;

            }

            List<TournamentTeam> groupA = [.. teams.Where(tt => tt.Group == TournamentTeamGroup.A)];

            List<TournamentTeam> groupB = [.. teams.Where(tt => tt.Group == TournamentTeamGroup.B)];

            List<TournamentTeam> groupA = [.. teams.Where(tt => tt.Group == TournamentTeamGroup.A).OrderBy(tt => tt.Place)];

            List<TournamentTeam> groupB = [.. teams.Where(tt => tt.Group == TournamentTeamGroup.B).OrderBy(tt => tt.Place)];

            for (int i = 0; i < 8; ++i)

            for (int i = 0; i <= 3; ++i)

            {

                Debug.Assert(groupA[i].Place == i + 1);

                Debug.Assert(groupB[i].Place == i + 1);

            }

            for (int i = 0; i < 3; ++i)

            {

                AssignTeams(matches[Match.groupMatchesTotal], groupA[i].IdTeam, groupB[3 - i].IdTeam);

                AssignTeams(matches[Match.groupMatchesTotal + i], groupA[i].IdTeam, groupB[3 - i].IdTeam);

            }

        }