fix: allow html element ref to be null

Author: joshunrau

src/hooks/useOnClickOutside/useOnClickOutside.ts

@@ -4,7 +4,7 @@ import { useEventListener } from '../useEventListener';
 
 type Handler = (event: MouseEvent) => void;
 
-export function useOnClickOutside<T extends HTMLElement = HTMLElement>(
+export function useOnClickOutside<T extends HTMLElement | null = HTMLElement>(
   ref: RefObject<T>,
   handler: Handler,
   mouseEvent: 'mousedown' | 'mouseup' = 'mousedown'