Opening a note that contains a YAML frontmatter changes it into a title

When a markdown note contains yaml style frontmatter as first lines, as soon as the note is opened, they are changed to a title.

More and more notes app that use local files use markdown and frontmatter for storing metadata. It's also the case of static sites generator that often use static markdown files. I wish we could think about a solution to avoid breaking frontmatter (if that's possible) to allow Nextcloud users to use Notes app as a way to edit those type of files

Steps to reproduce the behavior:

1. Create a note in Nextcloud that contains any form of frontmatter for example this kind:

---
title: "🧑‍🍳 Recettes" 
modification: 2022-09-21 12:54:36 
tags: 
    - DIY 
    - cuisine
---

2. Open Notes App and click on "edit" this note
3. The frontmatter is interpreted as a title and saved as such:

---
## title: "🧑‍🍳 Recettes" modification: 2022-09-21 12:54:36 tags: - DIY - cuisine

Expected behavior
I get it that frontmatter can not be used because of the variety of standards, formats, and metafields used in differents apps or software... but please leave it alone!

Or maybe, then it would be a feature request, add the possibility to enable yaml frontmatter detection?

Smartphone:

• Nextcloud Notes-Version (android app):
• F-Droid or Play Store: FDroid
• Android-Version: 7.0
• Device: Blackview BV6000

Server

• Nextcloud version: Nextcloud Hub II (23.0.2)
• Nextcloud Notes version (server app): 4.3.1

thanks for reading

No source file or test is named in the issue. Reproduce the behavior in the Android Notes editor with the supplied YAML frontmatter, then trace the markdown editing and saving entry points; done means opening and saving the note preserves the frontmatter instead of converting it into a title.