fix: bug where wallet doesn't sign out, closes #2341

This bug occurs when the user signs out, say via the popup,
but there is another Hiro Wallet window (frame) open at the
same time. The other active frame will restore the cached
values to its cache, effectively reverting the sign out action.
This fix forces other frames to close on sign out.

src/app/routes/app-routes.tsx

@@ -37,7 +37,7 @@ export function AppRoutes(): JSX.Element | null {
   useSaveAuthRequest();
 
   useOnWalletLock(() => navigate(RouteUrls.Unlock));
-  useOnSignOut(() => navigate(RouteUrls.Onboarding));
+  useOnSignOut(() => window.close());
 
   useEffect(() => {
     void analytics.page('view', `${pathname}`);