Add a Switch field to the Collection called "Code Block". Every item except 1 in this collection will have this switch off. One will have the switch turned on. You can turn it on for any item in the collection, it does not matter which one it is and there is no significance to which one your choose.
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There will be two Collection Lists on the page
Lastly, apply a class to the outer parent of the Dynamic List. Set it to display : none on the page. This can be anywhere on the page.
[show screenshots of working example and code bubbles]
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