No RTL Support & Search not working for languages like arabic or persian!

Problem

Hey! I'm working on a website with mdBook that is written in Persian and I stumbled upon these issues:

First: There is no RTL support. I fixed the problem at least for the content itself in the book with this CSS:

#content > main:nth-child(1) > * {
    text-align: start;
    unicode-bidi: plaintext;
}

But still, as you can see, some parts aren't fixed with this fix.

I think it's a simple fix, but it's really needed!

Second problem:
Search doesn't work for Arabic/Persian text but works perfectly for English!

Steps

1. Make a new project
2. Write some Persian/Arabic Text in it
3. Search for the Persian/Arabic Text

Possible Solution(s)

No response

Notes

No response

Version

mdbook v0.4.37

Start by reproducing both problems in a new mdBook project using Persian or Arabic text, following the listed steps. Inspect the generated content styling and search behavior, then verify that RTL layout works across the affected page elements and that Arabic/Persian queries return matching text.