Ensure item base type follows item title for unique items

[pHiney]

Fixes data inconsistency.

Description of the problem being solved:

Some items have Variant information between the item title and the item type (or base_name as the code has it)

Steps taken to verify a working solution:

• Open PoB
• Search for Story of the Vaal unique item.
• Double click on it
• Check that the variant dropdown still works

Link to a build that showcases this PR:

Before screenshot:

After screenshot:

[pHiney]

Not urgent. Just so that we can get some data consistency and i can generate a good xml.