default the RNTTestDetails to collapsed by default

Summary:
tsia. Done to allow for easier interaction of the examples, especially those with long descriptions

Changelog: [Internal]

Reviewed By: NickGerleman

Differential Revision: D57278607

fbshipit-source-id: f0a1d06c97c019fe177c8b9e51c3ca0ae12caef5

Author: GijsWeterings

packages/rn-tester/js/components/RNTTestDetails.js

@@ -23,7 +23,7 @@ function RNTTestDetails({
   title: string,
   theme: RNTesterTheme,
 }): React.Node {
-  const [collapsed, setCollapsed] = React.useState(false);
+  const [collapsed, setCollapsed] = React.useState(true);
 
   const content = (
     <>