Dynamically applies aria-hidden attribute value to multi select element children

[oisa]

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[oisa]

Dynamically applies aria-hidden attribute value to multi select element children - error upon list items becoming visible was:

Blocked aria-hidden on an element because its descendant retained focus. The focus must not be hidden from assistive technology users. Avoid using aria-hidden on a focused element or its ancestor. Consider using the inert attribute instead, which will also prevent focus. For more details, see the aria-hidden section of the WAI-ARIA specification at https://w3c.github.io/aria/#aria-hidden.
Element with focus: input
Ancestor with aria-hidden: <input aria-hidden=​"true" class=​"nsw-form__checkbox-input js-multi-select__checkbox" type=​"checkbox" id=​"select-all-savings-programs-1-first-lap-swimming-voucher-3" value=​"true" checked>​