Show design boards at previous versions in GraphQL

What does this MR do?

This MR allows design boards to be viewed at previous versions.

When a particular version is chosen, design records are filtered to only those that existed at that version and the images reflect what they were at that version.

The GraphQL designs query can take a new atVersion argument:

designs(atVersion: "gid://gitlab/DesignManagement::Version/1") {
  edges {
    node {
      image
    }
  }
}

A new finder can filter designs to only those that existed at the given version.

DesignTypes can access the atVersion argument passed to the parent connection in order to include the version sha in the image URI it presents.

• #9491 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Performance 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