Laravel 9 Unexpected datetime behaviour on Null datetime field

[cyberdude4]

• Laravel-mongodb Version: 9
• PHP Version: 8.2
• Database Driver & Version:

Description:

Steps to reproduce

1. Create/store null or empty datetime field in collection
2. add this datetime field in collection model in protected $cast array
3. try to fetch data from collection
4. and check null date will show as Current date

Expected behaviour

After fetching data from collection the Null or empty date fields should return null value or empty value - not current datetime

Actual behaviour

Insted of return null or empty field it returning current datetime

[GromNaN]

I added a test but did not hit the bug #2592 (on last version for Laravel 10).