CodeBlock is not working inside an array of blocks/attachments with blockId null

[AdryanSignor]

Q	A
Slack Block Kit for PHP version	2.0.0
PHP version	8.1.16

The Slack Block Kit for PHP is not working when use CodeBlock inside an array of blocks/attachments with blockId null.

use SlackPhp\BlockKit\Kit;

echo 'foobar1:' . PHP_EOL;
echo Kit::message(
    attachments: [
        Kit::attachment([
            Kit::codeBlock(
                '$this->foobar1();',
                //blockId: 'foobar1'
            )
        ])
    ]
)->toJson() . PHP_EOL;

echo PHP_EOL;

echo 'foobar2:' . PHP_EOL;
echo Kit::message(
        blocks: [
            Kit::codeBlock(
                '$this->foobar2();',
            //blockId: 'foobar2'
            )
        ]
    )->toJson() . PHP_EOL;

echo PHP_EOL;

echo 'foobar3:' . PHP_EOL;
echo Kit::message(
    blocks: Kit::codeBlock(
        '$this->foobar3();',
        //blockId: 'foobar3'
    )
)->toJson() . PHP_EOL;

Expected result

foobar1:
{"attachments":[{"blocks":[{"type":"section","text":{"type":"mrkdwn","text":"```\n$this->foobar1();\n```"}}]}]}

foobar2:
{"blocks":[{"type":"section","text":{"type":"mrkdwn","text":"```\n$this->foobar2();\n```"}}]}

foobar3:
{"blocks":[{"type":"section","text":{"type":"mrkdwn","text":"```\n$this->foobar3();\n```"}}]}

Current result

foobar1:
{"attachments":[[]]}

foobar2:
[]

foobar3:
{"blocks":[{"type":"section","text":{"type":"mrkdwn","text":"```\n$this->foobar3();\n```"}}]}

Possible Solution

I think the problem is on SlackPhp\BlockKit\Blocks\Virtual\VirtualBlock::getIterator inherited by SlackPhp\BlockKit\Blocks\Virtual\CodeBlock.
It must yield from $blocks instead of return the current generator when blockId is null.

public function getIterator(): Traversable
{
    $blocks = parent::getIterator();
    if ($this->blockId === null) {
        return yield from $blocks;
        // or
        // yield from $blocks;
        // return; // It make no diference, just change the return of $generator->getReturn() 
        // https://www.php.net/manual/en/generator.getreturn.php
    }

    // ...
}

I do not know if this change breaks other components/classes, I just tested here.