Generated cities have at least size 2 #51769
Merged
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Summary
Bugfixes "Generated cities have at least size 2."
Purpose of change
Closes #37856 - Mapgen sometimes generates completely empty towns.
Describe the solution
World option of city sizes 4 or less could sometimes generate city with size 1 or even less, which is then automatically set to a minimum of 1. Increased this minimum to size 2, so any city can have some buildings in it.
Describe alternatives you've considered
Don't generate cities with size 1 at all.
Testing
Teleported around 10 overmaps, looked at cities. No cities consisting of just crossroad observed.
Additional context
None.