As detailed in T246339, ListProperties should point to an intermediate page with a link out to the federation source Wiki's ListProperties page. Currently, ListDatatypes contains a description of the available data types in the local Wikibase, as well as a link to the local page Special:ListProperties/{datatype}. When federation is enabled, these links should instead point to the source Wiki.

We could redirect each link to an intermediate page like T246339 where users can click through to the source wiki's version of Special:ListProperties/{datatype}

BDD
Given My Wikibase has federated properties enabled and I am on Special:ListDataTypes
When I select "List of Properties with this data type"
Then an intermediate page is displayed with a link out to the source Wiki's version of Special:ListProperties/{datatype}

Tech details

• The special page for fed props list properties needs to be touched to take into account the "sub page" being accessed
• The subpage should be added to the link generated on our special page
• The text on the page can stay the same

Pointers:

• The real SpecialListProperties can be used as an example for subpage handling and what is done there.