Create/Update assets for version 1.21.3

assets/minecraft/textures/gui/sprites/hud/heart/_list.json

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+{"directories":[],"files":["absorbing_full.png","absorbing_full_blinking.png","absorbing_half.png","absorbing_half_blinking.png","absorbing_hardcore_full.png","absorbing_hardcore_full_blinking.png","absorbing_hardcore_half.png","absorbing_hardcore_half_blinking.png","container.png","container_blinking.png","container_hardcore.png","container_hardcore_blinking.png","frozen_full.png","frozen_full_blinking.png","frozen_half.png","frozen_half_blinking.png","frozen_hardcore_full.png","frozen_hardcore_full_blinking.png","frozen_hardcore_half.png","frozen_hardcore_half_blinking.png","full.png","full_blinking.png","half.png","half_blinking.png","hardcore_full.png","hardcore_full_blinking.png","hardcore_half.png","hardcore_half_blinking.png","poisoned_full.png","poisoned_full_blinking.png","poisoned_half.png","poisoned_half_blinking.png","poisoned_hardcore_full.png","poisoned_hardcore_full_blinking.png","poisoned_hardcore_half.png","poisoned_hardcore_half_blinking.png","vehicle_container.png","vehicle_full.png","vehicle_half.png","withered_full.png","withered_full_blinking.png","withered_half.png","withered_half_blinking.png","withered_hardcore_full.png","withered_hardcore_full_blinking.png","withered_hardcore_half.png","withered_hardcore_half_blinking.png"]}