Types from DatabasePropertyConfigResponse union require a description

[borisghidaglia]

Describe the bug
Types from DatabasePropertyConfigResponse union require a description property.
Example here.

However, the description property is not (always?) returned in the response if no description is provided on a notion db.

To Reproduce
Node version: v21.7.3
Notion JS library version: 2.2.15

Steps to reproduce the behavior:

• retrieve a db using await client.databases.retrieve({ database_id: id }) and save this data as a TS const somewhere.
• add the satisfies operator like this:

const notionData = {...} satisfies GetDatabaseResponse; 

For property types, you will get this error (as an example with RichTextDatabasePropertyConfigResponse):
Property 'description' is missing in type '{ id: string; name: string; type: "rich_text"; rich_text: {}; }' but required in type 'RichTextDatabasePropertyConfigResponse'

Expected behavior
satisfies GetDatabaseResponse on the data should work as client.databases.retrieve returns a Promise<GetDatabaseResponse>.

Additional context
It seems that description has been added in v2.2.15. See commit 4a21f8a which is part of the release.

Potential fixes
Today, description is defined like this:

description: PropertyDescriptionRequest | null

Thus, the API could always return the description field and set it to null if there is no description.
Or, the type could be fixed as such:

- description: PropertyDescriptionRequest | null
+ description?: PropertyDescriptionRequest | null

But then maybe we could also remove null and get rid of the union?