Delimiter and loading improvement for pipelines refactor

What does this MR do and why?

Adds delimiter to pipelines count and adds a loading state for count.

References

Screenshots or screen recordings

Before	After

How to set up and validate locally

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #223264