fix: restore Google login button on native (Flutter domains updated)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/js/modules/auth/scenes/login.js

@@ -84,11 +84,7 @@ export function mountLogin(el) {
     scene.replace('auth-register');
   });
 
-  const googleBtn = el.querySelector('#google-btn');
-  if (window.IS_NATIVE_APP) {
-    googleBtn.style.display = 'none';
-  }
-  googleBtn.addEventListener('click', () => {
+  el.querySelector('#google-btn').addEventListener('click', () => {
     audio.play('click');
     const redirect = encodeURIComponent(window.location.origin + '/');
     window.location.href = `${SUPABASE_URL}/auth/v1/authorize?provider=google&redirect_to=${redirect}`;