Titles above h3 are not rendered if typed in markdown

[virgile-dev]

Bug Report

Problematic behavior
When you type #### (and above) you do not get a H4 titles

Expected behavior/code
The text should be rendered into an H4 title and it should be displayed in the summary

Steps to Reproduce

1. Type #### dnede
2. Then do not see the title render
3. Click on the summary, do not see the title displayed

Environment

• Docs version:
• Instance url:

Possible Solution

Additional context/Screenshots
Add any other context about the problem here. If applicable, add screenshots to help explain.

[buildwithricky]

looks like an interesting issue can it be assigned to me

[AntoLC]

Seems like a issue on the Blocknote side.

[virgile-dev]

Checked on blocknotejs.org and it works well on their end. So I suspect it's on our side @AntoLC

[AntoLC]

Made here: #1375
Duplicate of #1511