Use hot reload with ws only

Originally from [SO](https://stackoverflow.com/q/78344596/9971404), without resolution.

Hot reload [tries to connect](https://github.com/dotnet/sdk/blob/release/7.0.2xx/src/BuiltInTools/BrowserRefresh/WebSocketScriptInjection.js#L15) with two websockets: `wss`, and if that fails, `ws`.

The ws connection succeeds and hot reload works. But I'm not using HTTPS in my local development environment, so the wss connection fails and the script always spams my devtools console with:
```
Firefox can’t establish a connection to the server at wss://localhost:50005/.
WebSocket failed to connect.
```

That is very annoying. Please allow us to configure hot reload to use `ws` only.