Resolve "Mini pipeline graph dropdown looks weird on Safari and hover does not work on firefox"

What does this MR do?

Fixes animation glitch & cross browser in the caret. Fixes hover state in firefox

Screenshots (if relevant)

Before

Safari: Firefox

After

Safari

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• 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 #26018 (closed) Closes #26004 (closed) Closes #26002 (closed)