Allow track_event for not logged in users

What does this MR do and why?

This merge request is proposing a change to the way GitLab tracks internal events.

Currently, internal events are only tracked for logged-in users. This change would allow internal events to be tracked for non-logged-in users as well.

This would provide more comprehensive data about how users interact with GitLab, and could be used to improve the product.

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Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

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.

Related to #426148 (closed)