Non-empty blank lines in fenced code ignored when in lists

[wooorm]

Given that spaces and such in fenced code are represented in the output (https://spec.commonmark.org/0.29/#example-99), that should also be the case for fenced code in lists.

For (␠ represents a space in these examples):

- ```
␠␠␠␠
  ```

```
␠␠
```

Actual (removed lines) / expected (added lines):

 <ul>
 <li>
-<pre><code>
+<pre><code>␠␠
 </code></pre>
 </li>
 </ul>
 <pre><code>␠␠
 </code></pre>

See Dingus

[jgm]

I agree, this is a bug. cmark gives the right output.