Unable to establish WebSocket connection with Firebase C++ SDK

### [REQUIRED] Please fill in the following fields:
* Pre-built SDK from the [website](https://firebase.google.com/download/cpp) or open-source from this repo: Open-source from this repo
* Firebase C++ SDK version: 10.7.0
* Main Firebase Components in concern: Auth
* Other Firebase Components in use: Database
* Platform you are using the C++ SDK on: Linux
* Platform you are targeting: Desktop

### [REQUIRED] Please describe the question here:

#### Expected behavior:

I expect to be able to establish a WebSocket connection using the Firebase C++ SDK and receive real-time updates of the database.

#### Actual behavior:

The WebSocket connection fails to establish using the Firebase C++ SDK, but a simple WebSocket client I wrote could build a secure connection (wss) to a public websocket server on the same device. The Firebase Realtime Database REST API connection works without any issues.

#### Description:
I am experiencing an issue with the Firebase C++ SDK, where I am unable to establish a WebSocket connection to the Firebase Realtime Database server. Here is the log message:
```
DEBUG: [conn_1170] websocket error occurred. Uri: wss://....firebaseio.com/.ws?ns=...&v=5
DEBUG: Error occurred while establishing connection to wss://....firebaseio.com/.ws?ns=...&v=5
DEBUG: [conn_1170] Closing connection. Reason: 4
DEBUG: [pc_0] Got on disconnect due to 4
```
However, when I tested the connection using a simple WebSocket client I wrote on the same device, it was able to connect successfully. So it might not be a router's firewall setting issue.

I also tested the connection using the Firebase Realtime Database REST API with the same credential by doing
```bash
$ curl "https://....firebaseio.com/.../msg.json?auth=$(cat token)"

```
and it worked without any issues. This suggests that the issue is specific to the WebSocket functionality of the Firebase C++ SDK.

I have checked my code for any errors or issues and ensured that I am using the correct credentials and endpoint URLs. I am using the latest version of the Firebase C++ SDK, and have followed the documentation provided by Firebase.

未指定源文件或测试。首先跟踪 Linux 上的 Firebase Realtime Database WebSocket 连接，并将其失败情况与正常工作的 REST 请求和独立安全 WebSocket 客户端进行比较。完成的标准是确定 SDK 特有的原因，并建立连接以接收实时数据库更新。

由索引模型根据 Issue 内容生成。