`juiceResources` extracts some rules from an external stylesheet and puts them in `style` tag in a generated document

I use an external stylesheet:
```html

```
And then I have in my generated HTML-file some rules put at the top inside a `style` tag like this:
```html

.dgtl-texts-right .dgtl-link * {
text-align: right !important;
}
.dgtl-dict .dgtl-link * {
text-align: center !important;
}

```
These rules are applied and inlined correctly though.

I tried to recreate the issue with come abstract markup and styles, but even in rather complex documents this seems to work fine. Whether my code is intricate enough or styles I do not know.

Below is the actual code I have in production that produces this extra `style` tag in output https://runkit.com/embed/zf593tsbx6wj

Start with the linked RunKit reproduction and the juiceResources entry point, then inspect how the external stylesheet is processed before the generated HTML is produced. Reproduce the unexpected style tag and compare it with the correctly inlined rules; done means the rules remain inlined without an extra style tag containing them.

Written by the indexing model from the issue text.