ViaVersion

a0b0ed4 Make <1.21.2 container id types consistent with Vanilla again ... that's to say, to make them inconsistent thanks to special ids: Byte:

• CONTAINER_SET_SLOT
• CONTAINER_CLICK
• PLACE_GHOST_RECIPE
• PLACE_RECIPE
• CONTAINER_BUTTON_CLICK
• CONTAINER_CLOSE (serverbound)
• CONTAINER_ACK (serverbound) Unsigned byte (unchanged):
• OPEN_SCREEN
• CONTAINER_SET_CONTENT
• CONTAINER_SET_DATA
• HORSE_SCREEN_OPEN
• CONTAINER_CLOSE (clientbound)
• CONTAINER_ACK (clientbound) Short (unchanged):
• SET_CREATIVE_MODE_SLOT

This doesn't change much in practice, but means it matches the Vanilla reading