Function useClickOutside

useClickOutside(
    elements: Ref<
        HTMLElement
        | null
        | undefined,
        HTMLElement | null | undefined,
    >[],
    onClickOutside: (event: MouseEvent) => void,
): { activate: () => void; deactivate: () => void }
Calls back on any click that lands outside every given element. Structured like useFocusTrap (explicit activate/deactivate) - the caller is responsible for wiring deactivate() into its own onBeforeUnmount.

Ported from luv-ui-library, found during the same follow-up re-scan that found useFocusTrap there. Fully generic (no brand coupling).
Parameters
- elements: Ref<HTMLElement | null | undefined, HTMLElement | null | undefined>[]
- onClickOutside: (event: MouseEvent) => void
Returns { activate: () => void; deactivate: () => void }
- Defined in src/composables/useClickOutside/index.ts:13