Get the region of my firebase function from frontend file

### Step 1: Describe your environment

* Operating system: Windows 11
* Browser: Chrome/139.0.0.0
* Firebase SDK version: 11.9.1

### Step 2: Describe the problem:

Actually I can get DB and App infos with :

`import { getFirestore, connectFirestoreEmulator } from 'firebase/firestore';`
`const db = getFirestore();`
or
`import { getApp } from 'firebase/app';`
`const app = getApp();`

It woud be useful to get the region of my firebase functions using a similar approach