SelectFilter->getOptionLabelFromRecordUsing

SelectFilter::make('event')
    ->options(fn (Table $table) => $table->getQuery()->pluck('event', 'event')->unique()->sort())
    ->searchable()
    ->preload(),
SelectFilter::make('user')
    ->options(fn (Table $table) => $table->getQuery()->pluck('actor_id', 'actor_id')->unique()->sort())
    ->getOptionLabelFromRecordUsing(function (int $actor) {
        $user = User::query()->where('id', $actor)?->username;
        if (!$user instanceof User) {
            return 'System';
        }

        return $user->username;
    })
    ->searchable()
    ->preload(),