When you put a link inside a table and export to PDF link is not shown

You can test it in the sample application by simply adding the following code
```html

HTML Renderer

```

and exporting to PDF.

Link is there since you can click it, but it's not shown...

Reproduce the issue in the sample application using the provided table and link HTML, then export it to PDF. Trace the table-link rendering and PDF export path; done means the link remains both clickable and visibly rendered in the exported PDF.

索引モデルが issue の本文から書いたものです。