Fix chunky turtle

[zyxkad]

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• Please check if the PR fulfills these requirements

• [ ] The commit message are well described
• [ ] Docs have been added / updated (for features or maybe bugs which were noted). If not, please update the needed documentation here. This is not mandatory
• [ ] All changes have fully been tested

• What kind of change does this PR introduce? (Bug fix, feature, ...)

Fix chunky turtle's behaviour.

• What is the current behavior? (You can also link to an open issue here)

Now the chunky turtle sometimes will not works, especially after server restart.

• ~~What is the new behavior (if this is a feature change)?~~

• Does this PR introduce a breaking change? (What changes might users need to make in their scripts due to this PR?)

If some player made their structure depends on the unstable chunk loading, then it will be a breaking change.

• Other information:

Still working on it