Frontend: Add notification banner for the needs view

Context

Followup from !154218 (comment 1954973663)

We would like to add a notification banner that this view will be removed in the coming milestone (currently set for 17.4) and users should use the pipeline view instead.

Proposal

• 🔗 Figma dev
• 👉 Design tab
  • Alert title: Upcoming visualization change
  • Alert description: The visualization in this tab will be removed. Instead, view needs relationships with the Job dependency option in the Pipeline tab.
  • Link text goes to the doc: https://docs.gitlab.com/ee/update/deprecations.html#removed-needs-tab-from-the-pipeline-view