Fix grass being buried under tiles

src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerChunk.kt

@@ -195,16 +195,16 @@ class ServerChunk(world: ServerWorld, pos: ChunkPos) : Chunk<ServerWorld, Server
 						ChunkState.FULL -> {
 							CompletableFuture.runAsync(Runnable { finalizeCells() }, Starbound.EXECUTOR).await()
 
-							// skip if we have no layout
-							if (world.template.worldLayout != null) {
-								placeGrass()
-							}
-
 							// skip if we have no layout, or it is a floating dungeon world
 							if (world.template.worldLayout != null && world.template.worldParameters !is FloatingDungeonWorldParameters) {
 								placeBiomeItems()
 							}
 
+							// skip if we have no layout
+							if (world.template.worldLayout != null) {
+								placeGrass()
+							}
+
 							signalChunkContentsUpdated()
 						}