Display MR note on standalone vulnerability page

What does this MR do?

When a pipeline is run, there will be a security tab for the pipeline:

Clicking on an item in the list will open a modal that shows details about the security vulnerability. If an issue and/or merge request is created for the vulnerability, notes are shown that link to the issue/MR:

On the standalone vulnerability page, we have the same thing, but the MR note is missing:

Before: MR note is missing	After: MR note is shown

How to test locally

1. Clone the Yarn Remediation repo.
2. Click on CI/CD -> Pipelines and run a pipeline on the curable branch.
3. Click on Security & Compliance -> Security Dashboard and click on either of the two vulnerabilities listed.
4. Click on the "Resolve with merge request" button on the upper right. The page will navigate to the merge request.
5. Click the back button in the browser. Verify that the merge request note is shown.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done