`Parse.User.save` fails with RangeError when saving a field value with an object that circularly references the user

[mdarens]

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest versions of Parse Server and the Parse JS SDK.

Issue Description

When saving a user from the SDK, if an attribute points back to the user, stringify will fail with a RangeError: Invalid string length

Steps to reproduce

1. Register a subclass on Parse.Object called Store with a field that points to the User class e.g. manager
2. Extend the User class to have a store field that points to Store
3. Create some users
4. Create a Store with its manager field pointing to a User
5. Attempt to save a User with its store field pointing to that store
6. Observe the error

Actual Outcome

Uncaught exception thrown trying to save user

Expected Outcome

Circular pointer serializes automatically

Environment

Server

• Parse Server version: 8.2.0
• Operating system: alpine linux in docker (node:18-alpine3.21)
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): Google Cloud

Database

• System (MongoDB or Postgres): MongoDB
• Database version: 7.0.22
• Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): MongoDB Atlas

Client

• Parse JS SDK version: 6.1.1

Logs

[parse-github-assistant]

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