Add guard to unbuckling to help it to not act upon terminating entities (#39410)

Add guard to unbuckling to help it to not act upon terminating entities (#39410)

* Add guard to unbuckling to help it to not act upon terminating entities

* Refactor guard for unbuckling

Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>
* Revert "Refactor guard for unbuckling"

This reverts commit bf975fbd6f5cfac45324a3d5d74e592ad17ad291.

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Co-authored-by: Luxeator <Luxeator>
Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>