Add option to allow iron golems to spawn in air

paper-server/patches/sources/net/minecraft/world/entity/animal/IronGolem.java.patch

@@ -9,3 +9,12 @@
          }
  
          super.doPush(entity);
+@@ -319,7 +319,7 @@
+         BlockPos blockposition1 = blockposition.below();
+         BlockState iblockdata = world.getBlockState(blockposition1);
+ 
+-        if (!iblockdata.entityCanStandOn(world, blockposition1, this)) {
++        if (!iblockdata.entityCanStandOn(world, blockposition1, this) && !this.level().paperConfig().entities.spawning.ironGolemsCanSpawnInAir) { // Paper - Add option to allow iron golems to spawn in air
+             return false;
+         } else {
+             for (int i = 1; i < 3; ++i) {