Disable Editing-Preview-Rendering

**Describe your question**
Hello!
I am planning to use this Markdown-Editor with a custom parser which is able to deactivate all kinds of rules.
Problem is that the editing-preview however shows e.g. Heading-Styling, which I might not allow in my parser. Is there a way to disable the Editing Style-preview?

The issue names no file, test, or entry point. Start by tracing how the editing preview applies heading styling and how custom parser rules are configured; done means there is a clear, tested way to disable that preview styling without affecting parser behavior.

Written by the indexing model from the issue text.