The Wither should spread decay instead of instantly killing mobs

The Wither currently kills mobs instantly to generate Wither Roses.I propose a change where the Wither instead corrupts mobs into a Decayed state.When hit by a Wither skull, normal mobs become Decayed instead of dyingBoss and special mobs (Warden, Ender Dragon, Wither) are unaffectedDecayed mobs must be killed by the player to obtain Wither RosesThis would make Wither Roses risk‑based, more endgame‑oriented, and give the Wither a more unique identity.