Unsupported Realtime Database URL - FIREBASE FATAL ERROR: Cannot parse Firebase url

### [READ] Step 1: Are you in the right place?

* For issues related to __the code in this repository__ file a Github issue.
* If the issue pertains to Cloud Firestore, read the instructions in the "Firestore issue"
template.
* For general technical questions, post a question on [StackOverflow](http://stackoverflow.com/)
with the firebase tag.
* For general Firebase discussion, use the [firebase-talk](https://groups.google.com/forum/#!forum/firebase-talk)
google group.
* For help troubleshooting your application that does not fall under one
of the above categories, reach out to the personalized
[Firebase support channel](https://firebase.google.com/support/).

### [REQUIRED] Step 2: Describe your environment

* Operating System version: Windows 11 23H2
* Firebase SDK version: ^12.1.0
* Firebase Product: Hosting and Realtime Database
* Node.js version: v20.11.1
* NPM version: 10.8.1

### [REQUIRED] Step 3: Describe the problem

#### Steps to reproduce:

I follow this tutorial to set up the Hosting, Cloud Functions, and Realtime Database.
https://developers.home.google.com/codelabs/smarthome-washer#1
After deployment, I visited the site and got this error from the console.

`Uncaught Error: FIREBASE FATAL ERROR: Cannot parse Firebase url. Please use https://.firebaseio.com
at st (util.ts:172:9)
at Qt (parser.ts:88:5)
at Oi.databaseFromApp (RepoManager.ts:108:21)
at Qi.INTERNAL.registerComponent.z.setServiceProps.Reference [as instanceFactory] (index.ts:52:42)
at S.getOrInitializeService (provider.ts:190:33)
at S.getImmediate (provider.ts:95:29)
at q._getService (firebaseApp.ts:127:54)
at c. [as database] (firebaseNamespaceCore.ts:228:29)
at Object.i [as database] (firebaseNamespaceCore.ts:209:32)
at SmartHome.handleData (main.js:70:12)`

I found that it is caused by `const parsedUrl = parseDatabaseURL(dataURL)` in **parser.ts**, it doesn't support the URL with 4 parts.
Firebase projects with Realtime Database in **us-central1** region work fine (3 parts)
https://x.firebaseio.com
But other regions don't work (4 parts)
https://x.asia-southeast1.firebasedatabase.app

This is the code causing the error, I didn't modify it much from the example given in the tutorial
`firebase.database().ref('/').child('washer').on("value", (snapshot) => {
...`