Rework Rename to Rayphantom, move to Outer End Islands as a tameable mount

I suggest a full rework of the Phantom to fit the lore and ecosystem of The End: 1. Rename Rename "Phantom" officially to Rayphantom (幻影鳐) to match its manta-ray-like flying appearance and the ethereal atmosphere of The End. ​ 2. Spawn rule changes Remove the overworld insomnia spawn mechanic entirely. Rayphantoms should only spawn naturally in the Outer End Islands, fixed spawn numbers generate with End structures stably. ​ 3. Mob behavior rework Rayphantoms are neutral passive mobs normally. If the player attacks a wild Rayphantom, all nearby Rayphantoms will turn hostile and swarm attack the player together. ​ 4. Tame & mount system Players can tame Rayphantoms with Chorus Fruits. After tamed, players can ride it with a saddle. Balanced flight restrictions: - No firework rocket boosting while riding ​ - The player’s experience bar temporarily turns into the Rayphantom’s stamina bar ​ - It can only fly horizontally or glide downward from high places (cannot climb upward) ​ - When stamina runs out, the Rayphantom stalls and drops the player automatically This rework makes the Outer End Islands more lively, adds a unique balanced flying mount different from elytra, and perfectly fits vanilla Minecraft’s gameplay and lore style without overpowered mechanics. Thank you for reading.