Description: When trying to upgrade my Java Survival world from 26.1 to 26.2, an error is displayed, reading: “"Failed to upgrade the world. This may happen if another program accessed the world during the upgrade. It may help to restart your computer and try again. If the issue persists, please consider reporting a bug."
Steps to reproduce: Upgrade a world from 26.1 to 26.2.
Expected result: World to be upgraded to 26.2 and continue to be playable.
Actual result: World fails to upgrade and is unplayable.
Environment
MacOS.
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