c.r.c: only Ansible logo in collection lists

Collection lists now use the ansible A logo, instead of the logo associated with their namespace.
(This is because we switched to the collection version search API, and the logo information is not available anymore. (namespace_metadata is null, logo needs namespace_metadata.avatar_url)

(found when checking crc-2023-06-27, but possibly also present in standalone)
May not be a bug, may be intentional.

There are likely 3 issues occurring

1. The galaxy namespaces haven’t been converted into pulp namespaces
   • This means the collection version endpoint `namespace_metadata` will be null. This is solved by edited and saving a namespace or running download-namespace-logos.py
2. Index rebuild has not run

• • This means that if there is a pulp namespace, only newly added collection versions will get the `namespace_metadata` populated. This may get solved by running download-namespace-logos.py which may trigger an index rebuild (after the namespace models edits, and the add_remove call will trigger a repo v bump, which will by proxy trigger an index rebuild)

1. When the `namespace_metadata` is populated, the `avatar_url` is null
   • This content app issue may be resolved with AAH-2213 and then removing the workaround in galaxy_ng