[macOS] OS Error: Operation not permitted

## 🐛 Bug Report

I' m trying to use this package on macOS, but am running into this error:
```
_ClientSocketException (ClientException with SocketException: Connection failed (OS Error: Operation not permitted, errno = 1), address = via.placeholder.com, port = 80, uri=http://via.placeholder.com/350x150)
```

### Expected behavior
The placeholder should load.

### Reproduction steps
1. Create a new Flutter project.
2. On the main screen, replace the "Hello World" Text widget with:
```
CachedNetworkImage(
imageUrl: "http://via.placeholder.com/350x150",
placeholder: (context, url) => CircularProgressIndicator(),
errorWidget: (context, url, error) => Icon(Icons.error),
)
```
3. Run the app on macOS.

### Configuration

**Version:** 3.3.1

**Platform:**
- macOS 14.4.1