[2023] Please fix lakes map gen

Originally posted by Employee 427: Half of the times LAKES map spawns a single giant lake in the middle... whats the point of even playing lakes (thats btw the default map) if its just gonna spawn a water map.

Continents is actually the default map type.

The map types are actually percentages of total water that's put on the map. We give it some rules, like "make sure it's a lake that's surrounded by water" and "don't have as much water as a water world"

We're not forcing it one way or the other when it comes to *where exactly* it puts that water, and having a central lake, or a lake that takes up half the map, or something else are all valid options.