[MC-309573] Dropping an edited map makes the game crash

DESCRIPTION

When I drop an edited map from my inventory, the game instantly crashes.

STEPS TO REPRODUCE

edit a map, and drop it.

EXPECTED RESULT

nothing special, the game should keep running normally.

ACTUAL RESULT

the game crashes, and it is impossible for me to load my world again.

Linked issues

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We're tracking this issue in MC-309394, so this ticket is being resolved and linked as a duplicate.

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