🐛 Bug Report: Can not create child of a parent via nested syntax or link parent and child documents through references

### 👟 Reproduction steps ```dart await databases.createDocument( databaseId: 'marvel', collectionId: 'movies', documentId: ID.unique(), data: { 'title': 'Spiderman', 'year': 2002, 'owner': { '\$id': '9999999999', 'author': 'Bob', 'text': 'Great movie!' } }, ) ``` ### 👍 Expected behavior Child to be created as well as parent. ### 👎 Actual Behavior Only parent created. ### 🎲 Appwrite version Version 1.4.x ### 💻 Operating system Windows ### 🧱 Your Environment _No response_ ### 👀 Have you spent some time to check if this issue has been raised before? - [X] I checked and didn't find similar issue ### 🏢 Have you read the Code of Conduct? - [X] I have read the [Code of Conduct](https://github.com/appwrite/.github/blob/main/CODE_OF_CONDUCT.md)