Fix chaining null variable

What does this MR do and why?

Fixes the issue in the screenshots section.

Screenshots or screen recordings

How to set up and validate locally

1. Go to svedova/security-reports-v2!1
2. Click on eval with argument of type Identifier
3. Check the console

You should see an error message.

If you clone the project locally, create an MR and check the same finding, the error should no longer exist.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.