Prevent replacing or removing an attachment under retention

As an administrator, I can NOT add, replace or remove an attachment under retention (nuxeo-document-attachments element)

AC
When

• a document is under retention and / or under legal hold
• AND a multivalued property is configured to be retained (e.g., files:files)
• AND this property is shown in the document view using the nuxeo-document-attachments widget (e.g., the default attachments widget for a File document type)

Then:

• As an administrator in Web UI, I can NOT replace the corresponding file(s) as the action is not available
• As an administrator in Web UI, I can NOT remove the corresponding file(s) as the action is not available
• As an administrator in Web UI, I can NOT add another file as the action is not available

This behavior is applicable to:

• default properties configured to be retainable
• custom properties configured to be retainable using studio

Notes:
nuxeo-replace-blob-button
nuxeo-delete-blob-button
https://github.com/nuxeo/nuxeo-web-ui/blob/maintenance-3.0.x/elements/nuxeo-document-actions/nuxeo-replace-blob-button.js#L187 needs to be evolved