zombie and infected iron golem

• Iron golems that die to zombies (or existing zombie iron golems) now immediately respawn as a zombie iron golem at the same spot, keeping any custom name.
• Zombie iron golems move faster than normal (higher base movement speed) and will actively target nearby regular iron golems to spread the infection.
• A zombie iron golem killing a standard iron golem will convert it, allowing the infection to chain through village defenders.
• The undead variant keeps the rest of the iron golem behavior so it still defends villages and roams as usual.
• You can summon one directly for testing with /summon zombieandinfectedirongolem:zombie_iron_golem.

Known notes:

• Because this adds a custom entity type, connecting clients must have the mod installed to see and interact with zombie iron golems correctly on a server.

Server Validation

✅ Server validation passed - The mod was tested on a real Minecraft server and loaded successfully.