Callable functions with custom region not working, Unauthenticated error

### Version info

**Angular:**
15.2.2

**Firebase:**
9.23.0

**AngularFire:**
7.6.1

### How to reproduce these conditions

**Steps to set up and reproduce**

1. Create angular 15 project
2. Add angularfire
3. Create callable functions with custom region

### Debug output

** Errors in the JavaScript console **

```
main.fc6d01fc3332ae31.js:1 ERROR Error: Uncaught (in promise): Error: FirebaseError: Unauthenticated
Error: FirebaseError: Unauthenticated
```

** Output from `firebase.database().enableLogging(true);` **

How/where do I enable this?

Callable function:

```
import { region } from 'firebase-functions';

export const getInvoicesPerQuarter= region('europe-west1')
.https.onCall(async (data: { id: string; invoiceNumber: string }, context) => {
...
})
```

app.module.ts:

```
provideFunctions(() => {
const functions = getFunctions(getApp(), 'europe-west1');
// const functions = getFunctions();
if (environment.useEmulators) {
connectFunctionsEmulator(functions, 'localhost', 5001);
}
return functions;
}),
```

firebase.json:

```
{
"hosting": [
{
"rewrites": [
{
"source": "/getInvoicesPerQuarter",
"function": "getInvoicesPerQuarter"
}
]
},

```
angular component:

```
import { Functions, httpsCallableData } from '@angular/fire/functions';

const getInvoicesPerQuarterCallable: (data: {
year: number;
quarter: number;
}) => Observable = httpsCallableData<
{ year: number; quarter: number },
string
>(this.functions, 'getInvoicesPerQuarter');

const result = await firstValueFrom(
getInvoicesPerQuarterCallable({ year, quarter }),
);
```

Calling this callable function works in the emulator.
I deploy this to firebase.
I doesn't work on production and I get the Unauthenticated error.
I already contacted firebase support but everything looks fine and they say it's an AngularFire issue and can't help me.
Functions are V1.

Überprüfe die Definition der aufrufbaren Funktion, app.module.ts, firebase.json und die Angular-Komponente, die httpsCallableData verwendet, und vergleiche dabei die konfigurierte Region europe-west1 mit der bereitgestellten Produktionsumgebung. Reproduziere den Produktionsaufruf und verfolge, warum er Unauthenticated zurückgibt; abgeschlossen ist die Aufgabe, wenn die bereitgestellte V1-aufrufbare Funktion aus der Angular-Anwendung ohne diesen Fehler funktioniert.

Vom Indexierungsmodell aus dem Issue-Text verfasst.