Handle correctly parent directory during deserialization

Fetched/enriched directory entities deserialization has been improved with NXP-29171.

Before we wasn't able to deserialize the entity because we didn't have the resolver to use. The resolver to use is defined on the schema, directory schemas don't declare resolver for their parent because the schema is shared among several directories.

The fix done didn't take into account the fact that parent directory could be another directory type and thus having another schema.

We want to fix this.