Fix typo bug in releases latest permalink

What does this MR do and why?

Permanent link to latest release feature with the request link of the form https://host/namespace/project/-/releases/permalink/latest?order_by=unsupport is expected to ignore the invalid order_by parameter and sort by using released_at.

But instead it is using order_created_desc for ordering when an invalid order_by= parameter is passed.

This bug is because of a negation typo in code and was captured in !82335 (comment 871921696)

Thanks to @acook.gitlab for catching it 🙂

Screenshots or screen recordings

Verified in logs for the query generated.

Before (order_by using created_at):

After (order_by using released_at):

How to set up and validate locally

1. Create a release say v1.0.0 in local on the flightjs/Flight project.
2. Then visit http://localhost:3000/flightjs/Flight/-/releases/permalink/latest?order_by=unsupported and it should take to http://localhost:3000/flightjs/Flight/-/releases/v1.0.0. Verify in the logs that the query generated is using order_by using released_at instead of created_at.

MR acceptance checklist

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Related to #16821 (closed)