It's not possible for anyone except administrators to access scheduled transitions → routes with LibraryItem entities because of this block in LibraryItemAccessControlHandler
Scheduled transitions grants view access based on entity type/bundle permission combos. This is done on the moderated entity itself, so the permissions do not exist for paragraph bundles.
That code chunk passes the view scheduled transition operation down to the referenced paragraph, which returns forbidden because that entity type is not moderated.
Install Scheduled transitions
Add content moderation and scheduled transitions to the Library item entity type
Add permissions to a role to administer the library item and scheduled transitions
Try and access scheduled transitions route for a library item
IMO, we should only check known operations on the referenced paragraph (view/update/delete).
Needs review
1.0
Module: Library
