[MC-252180] Wardens loaded from older versions don't despawn

For some reason,even after being calm for 1 minute,the warden just doesn't despawn.It keeps looking at floor like this and doesn't do anything else 😞

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Please provide a video with the debug screen enabled (hit the F3 key) demonstrating the issue.

[media]

I think it got stuck

maybe it was trying to track something but just couldn't reach the target,so it got stuck at here and didn't despawn.

Sadly, this is a sideffect of fixing another bug, happens to all spawned wardens from older versions.

A newly spawned warden should behave properly.