SummaryTables html fixes

[jkrumbiegel]

I tried using DocumenterVitepress for SummaryTables.jl but noticed that all the table outputs were broken. DocumenterVitepress tried to prefer the text/latex mime types without being able to render them, so I'm filtering out unknown MIME types here by giving them a priority of nothing.

Also, it turns out that just writing html into the markdown source that vitepress then processes is very prone to failures. For example double newlines break html-in-markdown parsing. Plus, vitepress complains about script tags or style tags. Using the v-html feature and escaping all the html into a javascript string literal lets us pass those snippets through untouched.

One still should not use script tags within the html because they are not reexecuted on page changes, but at least they don't completely break the build with this PR.

[lazarusA]

Thanks a million. This has been a pain also for me. Ready for merge? Also, could you please add a short example to the docs, so that we can see it in action.

[jkrumbiegel]

I noticed one more problem while testing the docs example, this one should work. But this is from a fork so there will be no preview deploy.

[lazarusA]

Well, let's merge and see 🙂.