chore: add meta allow popoups for playground app

Author: MomenSherif

apps/playground/public/index.html

@@ -6,6 +6,10 @@
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <meta name="theme-color" content="#000000" />
     <meta name="Cross-Origin-Opener-Policy" content="same-origin" />
+    <meta
+      name="Cross-Origin-Opener-Policy"
+      content="same-origin-allow-popups"
+    />
     <meta
       name="description"
       content="Google OAuth2 using the new Google Identity Services SDK for React @react-oauth/google"