Hide state in issue popover if request fails

What does this MR do and why?

We should not show an incorrect state if the request for the extra issue metadata fails

References

• #556384 (closed)

Screenshots or screen recordings

Before	After

For reference, when the request succeeds, this is how it looks:

How to set up and validate locally

1. Create a closed issue in project-a
2. In another project's issue, create a comment with a reference to the previous issue. (e.g. project-a#1)
3. Rename project-a to project-b
4. Hover over the comment's reference and the popover now shows an incorrect "Open" state

MR acceptance checklist

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