Following T279556: Introduce infrastructure for making partial blocks against actions, Special:BlockList should be updated to display the details of partial blocks against actions.
Special:BlockList displays a list of blocks, including the parameters of each block, i.e. what it actually blocks the user from doing.
For partial blocks, it displays which pages and/or namespaces are blocked, via BlockListPager::getRestrictionListHTML. This method should be updated to display action blocks too.