Failed to connect to a new db under same project other than default

Hi, do you support connecting to multiple dbs under same project? it doesn't look like it at the latest version. google forestore supports multiple dbs under a same project now.
https://cloud.google.com/blog/products/databases/manage-multiple-firestore-databases-in-a-project

If planned to support it in future, when would that be happening? If I am wrong, please let me know.
Thanks,

Chris

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Have a usage question?
=======================
Yes

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Think you found a bug?
=======================
Yes

Have a feature request?
========================
support connecting to multiple dbs under same project

### Version info

What versions of the following libraries are you using? Note that your issue may already
be fixed in the latest versions.
**Angular:**
15.1.0
**Firebase:**
12.5.2
**AngularFire:**
7.6.1

**Other (e.g. Ionic/Cordova, Node, browser, operating system):**
node: 16.15.0
### How to reproduce these conditions
put a new database name into datbaseURL:

**Failing test unit, Stackblitz demonstrating the problem**

Provide a failing test unit, or create a minimal, complete, and
verifiable example (http://stackoverflow.com/help/mcve) using
StackBlitz (https://stackblitz.com/edit/angular-fire-start).

**Steps to set up and reproduce**
enter a new database name into datbaseURL: Ex) databaseURL: 'https://test.firebaseio.com' (test is name of db)

**Sample data and security rules**

### Expected behavior

What is the expected behavior?
If dabaseURL is put such as databaseURL: 'https://test.firebaseio.com', it should connect to the test database.
### Actual behavior

What is the actual behavior?
it connects to default db currently.

首先跟踪 databaseURL 在当前 AngularFire/Firebase 集成中的使用方式，并确认请求的目标是 Firestore 还是 Realtime Database。使用报告中的版本和非默认数据库名称重现该行为；完成的标准是：在不更改默认连接的情况下，与所请求数据库的连接已记录并经过测试且能够正常工作。

由索引模型根据 Issue 内容生成。