Fix World.getWorldType not detecting amplified and large biomes

[LeonTG]

I fixed this in my Paper fork, I figured this was a good enough change to PR upstream so other people can enjoy the fix!

It works by accessing the settings of the NoiseBasedChunkGenerator and checking if it has amplified or large biome settings! and I've tested it to make sure it works too

First time making a PR to a project like this, so hopefully I did it correctly!