Expansion Planner District Fix
Fixes the bug where districts in the expansion planner were appearing in the wrong column.
https://forum.paradoxplaza.com/forum/threads/stellaris-corvis-v4-2-1-7874-expansion-planner-district-listing-bugs.1881200/
The fix is adding expansion_planner_type for the unused uncapped districts.
Patch 4.1.6 changed the way uncapped districts work by merging the functionality into the base types. The uncapped ones were kept in the files for save compatibility (as it wasn’t a major version change) but the expansion_planner_type property wasn’t set for them so they are adding their own column to the expansion planner.
