when past rich text on table cell, the table is broken

[jueinin]

Describe the bug
<what's going wrong!?>

To Reproduce
<clear steps to reproduce are super helpful! Best is to provide an online sandbox, click to create one>
open this page https://www.blocknotejs.org/examples/basic/minimal
and create a table
copy this markdown issue and paste on first table cell. the table broken

Misc

• Node version:
• Package manager:
• Browser:
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