[ui][collapsible] add defaultOpen prop (#314)

packages/ui/src/Collapsible/Collapsible.tsx

@@ -5,12 +5,13 @@ import { ChevronDownIcon } from '@heroicons/react/20/solid';
 
 type Props = Readonly<{
   children: ReactNode;
+  defaultOpen?: boolean;
   label: string;
 }>;
 
-export default function Collapsible({ children, label }: Props) {
+export default function Collapsible({ children, defaultOpen, label }: Props) {
   return (
-    <Disclosure>
+    <Disclosure defaultOpen={defaultOpen}>
       {({ open }) => (
         <>
           <Disclosure.Button className="text-primary-900 hover:bg-primary-100 focus-visible:ring-primary-500 -mx-2.5 box-content flex w-full justify-between rounded-lg px-2.5 py-2 text-left text-sm font-medium focus:outline-none focus-visible:ring focus-visible:ring-opacity-75">