Making an empty RichEditor field save as null

Has anyone figured out how to make an empty RichEditor field save as null in the database? To avoid empties saving as

{"type": "doc", "content": [{"type": "paragraph", "content": []}]}

{"type": "doc", "content": [{"type": "paragraph", "content": []}]}

as those render into

<p></p>

<p></p>

so its a bit weird to check whether the value exists.

Making an empty RichEditor field save as null - Filament