Show Pipeline(not Job) in MR CI status desktop notification

What does this MR do?

Update "Job" to "Pipeline" in MR CI status desktop notification

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

To follow the recent rewording:

"Build" to "Jobs" or "CI/CD Pipelines"

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8787

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Tests
  • All builds are passing
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #27955 (closed)