Looks for correct key to pass to commit prop. Adds rspec test.

What does this MR do?

Looks for the correct key sent in the API response and converts it to the correct key expected by the commit component.

Was looking for url to transform in path while it should be looking for path to transform in ref_url.

Before	After

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 #27880 (closed)