fix(authentication): update button navigation to avoid replacing entire stack

- Change context.goNamed to context.pushNamed in AuthenticationPage
- This modification prevents the authentication page from being replaced
- Allows users to navigate back to the authentication page

Author: fulleni

lib/authentication/view/authentication_page.dart

@@ -85,7 +85,7 @@ class AuthenticationPage extends StatelessWidget {
                         onPressed: isLoading
                             ? null
                             : () {
-                                context.goNamed(Routes.requestCodeName);
+                                context.pushNamed(Routes.requestCodeName);
                               },
                         label: Text(l10n.authenticationEmailSignInButton),
                         style: ElevatedButton.styleFrom(