chore: show undefined metadata in template

Author: floydkim

scripts/setup/templates/App.tsx.txt

@@ -97,12 +97,18 @@ function App() {
   );
 }
 
-function MetadataBlock({ label, value }: { label: string; value: string }) {
+function MetadataBlock({
+  label,
+  value,
+}: {
+  label: string;
+  value: string | null | undefined;
+}) {
   return (
     <View style={{ gap: 4 }}>
       <Text style={{ fontWeight: '600' }}>{label}</Text>
       <TextInput
-        value={value}
+        value={String(value)}
         multiline
         style={{ borderWidth: 1, borderRadius: 4, padding: 8, minHeight: 60, color: 'black' }}
       />