[Bleeding] Completely fix the tree generation algorithm to make it near identical to vanilla as well as fix potential bugs associated with disappearing saplings.

src/main/java/net/minecraft/server/WorldGenTaiga1.java

@@ -4,7 +4,7 @@ import java.util.Random;
 
 import org.bukkit.BlockChangeDelegate; // CraftBukkit
 
-public class WorldGenTaiga1 extends WorldGenerator {
+public class WorldGenTaiga1 extends WorldGenerator implements BlockSapling.TreeGenerator { // CraftBukkit add interface
 
     public WorldGenTaiga1() {}