Mini Pipeline Graph: Migrate components

What does this MR do and why?

Mini Pipeline Graph: Migrate components used

• Migrates deprecated GlDivider to GlDisclosureDropdownGroup
• Migrates custom group title to GlDisclosureDropdownGroup title

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Go to an MR with a failed job
2. Check pipline minigraph

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 #512693 (closed)