Draft: Resolve "Show Failed Jobs link only when there are failed jobs to show"

What does this MR do and why?

We now only show the MR failed jobs widget when there are jobs to show. This makes it easier to spot which pipeline has failures and take less vertical space in the pipelines list.

Screenshots or screen recordings

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 #419112