fix(TU20): more TU20 bug fixes

TU20:

Fixed issue where name tags do not appear to work correctly on the wither, iron golems, and wither skeletons.
Fix for issue where creepers hover off the floor.

---------

Co-authored-by: pieeebot <10+pieeebot@noreply.neolegacy.dev>
Reviewed-on: https://git.neolegacy.dev/pieeebot/mc_pieLCE/pulls/5
Co-authored-by: qloak <realminecart@gmail.com>
Co-committed-by: qloak <realminecart@gmail.com>

Minecraft.Client/CreeperModel.cpp

@@ -6,7 +6,7 @@
 // 4J - added
 void CreeperModel::_init(float g)
 {
-    int yo = 4;
+    int yo = 6;
 
     head = new ModelPart(this, 0, 0);
     head->addBox(-4, - 8, -4, 8, 8, 8, g); // Head