Rate limiter can fail if request.auth is undefined

[dblythy]

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 version of Parse Server.

Issue Description

When using a rate limiter, the rate limiter can fail when request.auth is undefined. This can lead the rate limiter to reject all requests.

Steps to reproduce

Create a rate limiter and attempt to connect with auth

Actual Outcome

Rate limiter rejects all requests

Expected Outcome

Rate limiter passes

Environment

Server

• Parse Server version: alpha
• Operating system: FILL_THIS_OUT
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): FILL_THIS_OUT

Database

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

Client

• SDK (iOS, Android, JavaScript, PHP, Unity, etc): FILL_THIS_OUT
• SDK version: FILL_THIS_OUT

Logs

[parse-github-assistant]

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[parseplatformorg]

🎉 This change has been released in version 6.0.0-alpha.28

[parseplatformorg]

🎉 This change has been released in version 6.0.0-beta.1

[parseplatformorg]

🎉 This change has been released in version 6.0.0