Port “Contributing organizations for this advisory” block

We might not even need a view for this as we can access the contribution record in a jsonapi format: https://git.drupalcode.org/project/contribution_records/-/blob/1.0.x/src...

This might already have all the data we need.

Example: http://new.drupal.org/contribution-record?source_link=https://www.drupal...

That has all the data we need.

MR https://git.drupalcode.org/project/drupalorg/-/merge_requests/394/diffs ready for review.

Can be tested at: https://drupal:drupal@fjgarlin-drupal.dev.devdrupal.org/sa-contrib-2025-027

I moved this to a fresh block implementation so we’re not relying on the old block being placed. This is deploying soon.