Background
Currently, previews are broken for disambiguation pages, displaying portions of the list of disambiguations.
Acceptance Criteria
Previews should display the generic preview for disambiguation pages ("Could not load a preview sad face")
NOTE: this is a temporary solution. Second iteration will develop custom previews for disambiguation pages'
Notes
- Short term solution.
- Future work planned in T168392
- There is a Disambiguator extension which allows editors to set a flag on pages saying a page is a disambiguation page. We should use it's API.