Fix custom attributes to be nullable

[blackmad-cradle]

Description

Deserializing these events via list calls is crashing on custom_attributes being missing.

The API docs should possibly be updated to show that this dict can be null

Documentation

Does this require changes to the WorkOS Docs? E.g. the API Reference or code snippets need updates.

[ ] Yes

If yes, link a related docs PR and add a docs maintainer as a reviewer. Their approval is required.

[greptile-apps]

Greptile Summary

Made custom_attributes field optional in DirectoryUser and OrganizationMembership models to fix deserialization crashes when the API returns responses without this field.

• Changed custom_attributes: Dict[str, Any] to custom_attributes: Optional[Dict[str, Any]] = None in DirectoryUser
• Changed custom_attributes: Mapping[str, Any] to custom_attributes: Optional[Mapping[str, Any]] = None in OrganizationMembership
• Aligns with existing pattern used in Profile type where custom_attributes is also optional
• Prevents Pydantic validation errors when deserializing API responses that omit the custom_attributes field

Confidence Score: 5/5

• This PR is safe to merge with no risk
• The change is a straightforward bug fix that makes custom_attributes optional with a default value of None, preventing deserialization crashes. The fix aligns with the existing pattern used in the Profile type and matches how Pydantic models handle optional fields. No logic changes, no security concerns, and the change is backwards compatible.
• No files require special attention

Important Files Changed

Filename	Overview
src/workos/types/directory_sync/directory_user.py	Made custom_attributes optional with default None to prevent deserialization crashes when field is missing from API response
src/workos/types/user_management/organization_membership.py	Made custom_attributes optional with default None to prevent deserialization crashes when field is missing from API response

_{Last reviewed commit: 780a05e}

[greptile-apps]

_{2 files reviewed, no comments}

_{Edit Code Review Agent Settings | Greptile}

[mattgd]

Thanks for bringing this to our attention @blackmad-cradle. From the discussion in your Slack channel, we ended up taking a slightly different approach to the fix in #560. This has been release in v5.42.1. Let us know if you're still experiencing issues with that version.