fix: add try-catch to clipboard write in UsernameGen

Author: vedparkasharya

src/pages/play/UsernameGen.tsx

@@ -46,10 +46,14 @@ export default function UsernameGen() {
     setUsernames(newNames);
   }, [selectedStyle]);
 
-  const copyUsername = useCallback((name: string, index: number) => {
-    navigator.clipboard.writeText(name);
-    setCopiedIndex(index);
-    setTimeout(() => setCopiedIndex(null), 2000);
+  const copyUsername = useCallback(async (name: string, index: number) => {
+    try {
+      await navigator.clipboard.writeText(name);
+      setCopiedIndex(index);
+      setTimeout(() => setCopiedIndex(null), 2000);
+    } catch {
+      // Clipboard failed (non-secure context), silently ignore
+    }
   }, []);
 
   return (