Firebase Phone Auth not receiving silent notification on SwiftUI

I am trying to implement phone auth in SwiftUI using Firebase. I keep getting the following error in the console:

If app delegate swizzling is disabled, remote notifications received by UIApplicationDelegate need to be forwarded to FIRAuth's canHandleNotificaton: method.

I have not disabled swizzling from what I know and I have tried different things. I set-up my firebase project correctly, anyone else facing the same problem?

I looked up in the documentation and I found a part about this:

func application(_ application: UIApplication,
    didReceiveRemoteNotification notification: [AnyHashable : Any],
    fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
  if Auth.auth().canHandleNotification(notification) {
    completionHandler(.noData)
    return
  }
  // This notification is not auth related, developer should handle it.
}

But I don't know where to put it or how to declare it.

Tried doing the following but nothing changes:

import SwiftUI
import Firebase
import GoogleMaps

class AppDelegate: NSObject, UIApplicationDelegate {
    
    func application(_ application: UIApplication,
        didReceiveRemoteNotification notification: [AnyHashable : Any],
        fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
      if Auth.auth().canHandleNotification(notification) {
        completionHandler(.noData)
        return
      }
      // This notification is not auth related, developer should handle it.
    }
    
    func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
      for urlContext in URLContexts {
          let url = urlContext.url
          Auth.auth().canHandle(url)
      }
      // URL not auth related, developer should handle it.
    }
}

@main
struct partidulverdeApp: App {
    
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
    
    init() {
        FirebaseApp.configure()
        GMSServices.provideAPIKey("AIzaSyAaze5cpEcJUgw2WFgLhlTWYr9ZP4fyDNk")
    }
    
    var body: some Scene {
        WindowGroup {
            MainView()
                .onOpenURL(perform: { url in
                Auth.auth().canHandle(url)
            })
        }
    }
}