Add Scheduled badge to pipeline detail view

What does this MR do and why?

This adds the Scheduled badge to the pipeline detail page

Screenshots or screen recordings

Pipeline detail view	Pipeline overview

How to set up and validate locally

Just create a schedule, play it and visit the detail view of the triggered pipeline

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.

Relates to #375222 (closed)