fix: 🌍fix OTG worlds generated wrongly

⚠️Important:
If you created __server__ on versions `v1.27.0` (2024-1-10) and up to `v1.31.0`, your server world generated wrongly! It will have enormous oceans (50k blocks wide), lack of biomes (about 300 biomes missing), no BoP trees and features.

This all happens because i accidentally forget to set `level-name=BBOP-Extended` in `server.properties` file when migrated to new server configuration.

I highly recommend to make new world with fixed config. This only related to dedicated servers and not unaffect single player worlds.

server/server.properties

@@ -11,7 +11,7 @@ gamemode=0
 generate-structures=true
 generator-settings=
 hardcore=false
-level-name=world
+level-name=BBOP-Extended
 level-seed=
 level-type=OTG
 max-build-height=256