StyledFirebaseAuth does not render with firebase ^9.8.1

# Description
StyledFirebaseAuth renders no visible output when using `firebase: ^9.8.1`. No errors in console.

The below illustration is from my local dev environment. Not logged in. HTML is output, but not enough to actually construct a UI.

Configuration looks like the following
```
const uiConfig = {
signInFlow: 'popup',
signInOptions: [
GoogleAuthProvider,
EmailAuthProvider
],
callbacks: {
// Avoid redirects after sign-in.
signInSuccessWithAuthResult: () => false,
},
}
```

Have tested firebase auth lib itself and it works as expected for logging users in/out.

I speculate the problem is how `StyledFirebaseAuth` handles the functional approach of firebase 9+.

Reproduce la UI que falta con firebase ^9.8.1 utilizando la uiConfig proporcionada y el componente StyledFirebaseAuth. Inspecciona cómo el wrapper de React inicializa FirebaseUI y gestiona la API funcional de Firebase 9+; se considera terminado cuando la UI de inicio de sesión configurada se renderiza visiblemente sin errores en la consola.

Escrito por el modelo de indexación a partir del texto del issue.