Multiple level fenced block quote

[ccoVeille]

Here on GitHub we can easily use block quote like this one

date

And we can explain to someone else how to achieve that by providing multileveled block quote

````
```shell
date
```
````

Which will be rendered like this

```shell
date
```

I was unable to use the multileveled fenced block code on dev.to here

https://dev.to/ccoveille/comment/2ek4p

So I had to try to explain him how to do it.

The fact other users are writing this make me think I'm not the only one

https://dev.to/citronbrick/comment/2ekem

Is there something I don't get or is there an issue ?

I did a proof of concept here

https://dev.to/ccoveille/fenced-block-quote-3361-temp-slug-3677552?preview=0909500c7a5b2eadf7b75368d7230a31157928818ebea8923a99b2eb8dcebb329fff8daf1ce77970bf71b5432042d494936467de32acfab3ca9b47c3

The content is this one

````
```shell
date
```
````

As you can see the rendering is totally broken

Please move ticket to issues if it's confirmed and there are no existing issues about it

[ccoVeille]

It might be linked to this one

#12060