markdown+link_attributes: not effective for reference links

[UlyssesZh]

Explain the problem.

pandoc --from markdown+link_attributes --to html5

[link][link contents]{target="_blank"}
[link2](https://example.com){target="_blank"}

[link contents]: https://example.com

Get:

<p><a href="https://example.com">link</a>{target=“_blank”} <a
href="https://example.com" target="_blank">link2</a></p>

Expected:

<p><a href="https://example.com" target="_blank">link</a> <a
href="https://example.com" target="_blank">link2</a></p>

Pandoc version
3.1.9