Laravel casts method not casting types

[maicol07]

API Platform version(s) affected: 4.2.12

Description
If you define casts via the Laravel method it isn't caught up by API Platform. Only $casts works.

How to reproduce
Try to create a model and define casts via the casts() method, not the $casts property

Possible Solution
Might need to call the initializeHasAttributes method

Additional Context
Migrated from api-platform/api-platform#2962